-2a-6+15a=-21+5

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Solution for -2a-6+15a=-21+5 equation: 



-2a-6+15a=-21+5

We move all terms to the left:

-2a-6+15a-(-21+5)=0

We add all the numbers together, and all the variables

-2a+15a-6-(-16)=0

We add all the numbers together, and all the variables

13a+10=0

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

13a=-10

a=-10/13

a=-10/13

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