3a+4=a-+18

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Solution for 3a+4=a-+18 equation: 



3a+4=a-+18

We move all terms to the left:

3a+4-(a-+18)=0

We add all the numbers together, and all the variables

3a-(+a)+4=0

We get rid of parentheses

3a-a+4=0

We add all the numbers together, and all the variables

2a+4=0

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

2a=-4

a=-4/2

a=-2

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