10+2a=-18

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Solution for 10+2a=-18 equation: 



10+2a=-18

We move all terms to the left:

10+2a-(-18)=0

We add all the numbers together, and all the variables

2a+28=0

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

2a=-28

a=-28/2

a=-14

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