8=0.75a+12-1a+4

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Solution for 8=0.75a+12-1a+4 equation: 



8=0.75a+12-1a+4

We move all terms to the left:

8-(0.75a+12-1a+4)=0

We add all the numbers together, and all the variables

-(-0.25a+16)+8=0

We get rid of parentheses

0.25a-16+8=0

We add all the numbers together, and all the variables

0.25a-8=0

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

0.25a=8

a=8/0.25

a=32

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