7a-30=10a-20

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Solution for 7a-30=10a-20 equation: 



7a-30=10a-20

We move all terms to the left:

7a-30-(10a-20)=0

We get rid of parentheses

7a-10a+20-30=0

We add all the numbers together, and all the variables

-3a-10=0

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

-3a=10

a=10/-3

a=-3+1/3

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