A+4+2a=-11

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Solution for A+4+2a=-11 equation: 



+4+2A=-11

We move all terms to the left:

+4+2A-(-11)=0

We add all the numbers together, and all the variables

2A+15=0

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

2A=-15

A=-15/2

A=-7+1/2

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