2-4a=30

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Solution for 2-4a=30 equation: 



2-4a=30

We move all terms to the left:

2-4a-(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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