100a-12=40a+4

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Solution for 100a-12=40a+4 equation: 



100a-12=40a+4

We move all terms to the left:

100a-12-(40a+4)=0

We get rid of parentheses

100a-40a-4-12=0

We add all the numbers together, and all the variables

60a-16=0

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

60a=16

a=16/60

a=4/15

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