10+a+8a-2a=-25

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Solution for 10+a+8a-2a=-25 equation: 



10+a+8a-2a=-25

We move all terms to the left:

10+a+8a-2a-(-25)=0

We add all the numbers together, and all the variables

7a+35=0

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

7a=-35

a=-35/7

a=-5

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