SOLUTION: What number must you add to 128 and subtract from 256 so that the answers to both examples are equal? Please help me

Question 170834: What number must you add to 128 and subtract from 256 so that the answers to both examples are equal? Please help me
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
The statement "what number must you add to 128 and subtract from 256 so that the answers to both examples are equal" translates to

Start with the given equation.

Subtract from both sides.

Add to both sides.

Combine like terms on the left side.

Combine like terms on the right side.

Divide both sides by to isolate .

Reduce.

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Answer:

So the answer is which means that the number is 64.

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