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How to check equation record

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welcome to friendly math 101 today our lesson is on how to check your answers when youre solving equations when youre checking your answers you want to make sure that your solution creates a true statement so lets say we have this equation and we think our solution after weve solved the problem is x equals negative 3 what were going to do is were going to substitute this value in for X so we get negative 3 times negative 3 plus 4 is equal to 13 now negative 3 times negative 3 is 9 and well just recopy everything else down here 9 plus 4 is 13 which does in fact equal 13 so this does create a true statement which means our solution of X is equal to negative 3 is correct now lets take a look at an example where our solution is incorrect and where we would create a false statement so here we have a multi-step equation and lets just say after we solve the problem we got a is equal to 8 were going to substitute this in for all of the a values on both sides of the equal sign and th

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When solving systems of equations you can check your answer by?

To check a system of equations by substitution, you plug your values for x and y into the original equations. If both simplified expressions are true then your answer is correct.

What is the check in algebra?

0:08 1:19 Now when youre doing an algebraic check all youre doing is youre checking using algebra that aMoreNow when youre doing an algebraic check all youre doing is youre checking using algebra that a solution works out so for example if you have 3x.

How do you solve and check?

3:09 6:12 And then 2 times 16 is 32. And 32 plus 4 is 36. I notice Im kind of working down my page as IMoreAnd then 2 times 16 is 32. And 32 plus 4 is 36. I notice Im kind of working down my page as I simplify each side. Id. Like you guys doing the same.

How do you solve and check an equation?

Checking Solutions to Equations Check that the given number is a solution to the equation: Replace the variable in the equation with the given value, -1. 2 = 2 is a true statement. Check that the given number is a solution to the equation: Replace the variable in the equation with the given value, 3.

How do you check an answer to an equation?

We check a solution to an equation by replacing the variable in the equation with the value of the solution. A solution should result in a true statement when simplified.

How do you know if an equation is true?

True is when the equation is correct. For example, if I were to write the equation 9+9 = 10+8, it would be true because both sides equal 18. However, if I were to write the equation 9+9 = 9+8, it would be false because one side equals 18 and one side equals 17.

What is the check of an equation?

We check a solution to an equation by replacing the variable in the equation with the value of the solution. A solution should result in a true statement when simplified.

How do you check answers in one step equations?

A one-step equation is an algebraic equation you can solve in only one step. Once youve solved it, youve found the value of the variable that makes the equation true. To solve one-step equations, we do the inverse (opposite) of whatever operation is being performed on the variable, so we get the variable by itself.

How do you verify an algebraic expression?

How to verify algebraic identity? The algebraic identities are verified using the substitution method. In this method, substitute the values for the variables and perform the arithmetic operation. Another method to verify the algebraic identity is the activity method.

How do you know if an equation is verified?

A solution to an algebra problem is valid if both sides of the equation are still equal when the problem has been worked out with the chosen solution substituted for the variable(s).

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