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a*3+11=-5
We move all terms to the left:
a*3+11-(-5)=0
We add all the numbers together, and all the variables
a*3+16=0
Wy multiply elements
3a+16=0
We move all terms containing a to the left, all other terms to the right
3a=-16
a=-16/3
a=-5+1/3
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