3a-18=-8a-7

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Solution for 3a-18=-8a-7 equation: 



3a-18=-8a-7

We move all terms to the left:

3a-18-(-8a-7)=0

We get rid of parentheses

3a+8a+7-18=0

We add all the numbers together, and all the variables

11a-11=0

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

11a=11

a=11/11

a=1

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