8-3(1+4a)=-21

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Solution for 8-3(1+4a)=-21 equation: 



8-3(1+4a)=-21

We move all terms to the left:

8-3(1+4a)-(-21)=0

We add all the numbers together, and all the variables

-3(4a+1)+8-(-21)=0

We add all the numbers together, and all the variables

-3(4a+1)+29=0

We multiply parentheses

-12a-3+29=0

We add all the numbers together, and all the variables

-12a+26=0

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

-12a=-26

a=-26/-12

a=2+1/6

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