8(10+a)=40

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Solution for 8(10+a)=40 equation: 



8(10+a)=40

We move all terms to the left:

8(10+a)-(40)=0

We add all the numbers together, and all the variables

8(a+10)-40=0

We multiply parentheses

8a+80-40=0

We add all the numbers together, and all the variables

8a+40=0

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

8a=-40

a=-40/8

a=-5

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