30=2-4a

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Solution for 30=2-4a equation: 



30=2-4a

We move all terms to the left:

30-(2-4a)=0

We add all the numbers together, and all the variables

-(-4a+2)+30=0

We get rid of parentheses

4a-2+30=0

We add all the numbers together, and all the variables

4a+28=0

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

4a=-28

a=-28/4

a=-7

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