2a-4=-18

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Solution for 2a-4=-18 equation: 



2a-4=-18

We move all terms to the left:

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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