18=-2a+4

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Solution for 18=-2a+4 equation: 



18=-2a+4

We move all terms to the left:

18-(-2a+4)=0

We get rid of parentheses

2a-4+18=0

We add all the numbers together, and all the variables

2a+14=0

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

2a=-14

a=-14/2

a=-7

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