8-2a+7=a+40

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Solution for 8-2a+7=a+40 equation: 



8-2a+7=a+40

We move all terms to the left:

8-2a+7-(a+40)=0

We add all the numbers together, and all the variables

-2a-(a+40)+15=0

We get rid of parentheses

-2a-a-40+15=0

We add all the numbers together, and all the variables

-3a-25=0

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

-3a=25

a=25/-3

a=-8+1/3

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