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-3+4(1+4a)=-127
We move all terms to the left:
-3+4(1+4a)-(-127)=0
We add all the numbers together, and all the variables
4(4a+1)-3-(-127)=0
We add all the numbers together, and all the variables
4(4a+1)+124=0
We multiply parentheses
16a+4+124=0
We add all the numbers together, and all the variables
16a+128=0
We move all terms containing a to the left, all other terms to the right
16a=-128
a=-128/16
a=-8
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