7a=5a-18

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Solution for 7a=5a-18 equation: 



7a=5a-18

We move all terms to the left:

7a-(5a-18)=0

We get rid of parentheses

7a-5a+18=0

We add all the numbers together, and all the variables

2a+18=0

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

2a=-18

a=-18/2

a=-9

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