15a+7-10a=-3

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Solution for 15a+7-10a=-3 equation: 



15a+7-10a=-3

We move all terms to the left:

15a+7-10a-(-3)=0

We add all the numbers together, and all the variables

5a+10=0

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

5a=-10

a=-10/5

a=-2

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