Question

Question #42928

Answer 1

When dealing with algebraic expressions or equations, you can usually double check my answer by substituting the answer you obtained back into the original expressions or equations.

Explanation:

Example if: `3x-12=2xto`

`3x-2x-12+12=2x-2x+12`

`3x-2xcancel(-12)+cancel(12)=cancel(2x)cancel(-2x)+12to`

`x=12` [ANS]

Then we can check the solution by substituting [ANS] into the given equation.

`3x-12=2xto`

`3(12)-12=2(12)`

`36-12=24`

`24=24` {Check]

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