2a+20=7a-5

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Solution for 2a+20=7a-5 equation: 



2a+20=7a-5

We move all terms to the left:

2a+20-(7a-5)=0

We get rid of parentheses

2a-7a+5+20=0

We add all the numbers together, and all the variables

-5a+25=0

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

-5a=-25

a=-25/-5

a=+5

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