(4a-16)-(a-4)=-25

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Solution for (4a-16)-(a-4)=-25 equation: 



(4a-16)-(a-4)=-25

We move all terms to the left:

(4a-16)-(a-4)-(-25)=0

We add all the numbers together, and all the variables

(4a-16)-(a-4)+25=0

We get rid of parentheses

4a-a-16+4+25=0

We add all the numbers together, and all the variables

3a+13=0

We move all terms containing a to the left, all other terms to the right

3a=-13

a=-13/3

a=-4+1/3

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