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1/7a+4=-2
We move all terms to the left:
1/7a+4-(-2)=0
Domain of the equation: 7a!=0We add all the numbers together, and all the variables
a!=0/7
a!=0
a∈R
1/7a+6=0
We multiply all the terms by the denominator
6*7a+1=0
Wy multiply elements
42a+1=0
We move all terms containing a to the left, all other terms to the right
42a=-1
a=-1/42
a=-1/42
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