10-4a=-30

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Solution for 10-4a=-30 equation: 



10-4a=-30

We move all terms to the left:

10-4a-(-30)=0

We add all the numbers together, and all the variables

-4a+40=0

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

-4a=-40

a=-40/-4

a=+10

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