20-2a=4a-10

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Solution for 20-2a=4a-10 equation: 



20-2a=4a-10

We move all terms to the left:

20-2a-(4a-10)=0

We get rid of parentheses

-2a-4a+10+20=0

We add all the numbers together, and all the variables

-6a+30=0

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

-6a=-30

a=-30/-6

a=+5

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