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39(x+2)+2(x+4)=-1
We move all terms to the left:
39(x+2)+2(x+4)-(-1)=0
We add all the numbers together, and all the variables
39(x+2)+2(x+4)+1=0
We multiply parentheses
39x+2x+78+8+1=0
We add all the numbers together, and all the variables
41x+87=0
We move all terms containing x to the left, all other terms to the right
41x=-87
x=-87/41
x=-2+5/41
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