1-4a=-7

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Solution for 1-4a=-7 equation: 



1-4a=-7

We move all terms to the left:

1-4a-(-7)=0

We add all the numbers together, and all the variables

-4a+8=0

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

-4a=-8

a=-8/-4

a=+2

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