7-a=4a-18

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Solution for 7-a=4a-18 equation: 



7-a=4a-18

We move all terms to the left:

7-a-(4a-18)=0

We add all the numbers together, and all the variables

-1a-(4a-18)+7=0

We get rid of parentheses

-1a-4a+18+7=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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