To make sure your answers for linear equations are correct, follow these simple steps:
Plug it Back In: Take your answer and put it back into the original problem.
For example, if you solved the equation (2x + 3 = 11) and found (x = 4), check it like this:
(2(4) + 3 = 11).
Do the Math: Calculate both sides of the equation. If they match, then your answer is right!
Let’s Try an Example:
Start with the original equation: (3x - 6 = 9).
You solve it and find (x = 5).
Now check it:
(3(5) - 6 = 9)
Which means:
(15 - 6 = 9) (and that is true!).
By following these steps every time, you'll make sure your answers are correct!
To make sure your answers for linear equations are correct, follow these simple steps:
Plug it Back In: Take your answer and put it back into the original problem.
For example, if you solved the equation (2x + 3 = 11) and found (x = 4), check it like this:
(2(4) + 3 = 11).
Do the Math: Calculate both sides of the equation. If they match, then your answer is right!
Let’s Try an Example:
Start with the original equation: (3x - 6 = 9).
You solve it and find (x = 5).
Now check it:
(3(5) - 6 = 9)
Which means:
(15 - 6 = 9) (and that is true!).
By following these steps every time, you'll make sure your answers are correct!