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8(4-x)/7=-x
We move all terms to the left:
8(4-x)/7-(-x)=0
We add all the numbers together, and all the variables
8(-1x+4)/7-(-1x)=0
We get rid of parentheses
8(-1x+4)/7+1x=0
We multiply all the terms by the denominator
8(-1x+4)+1x*7=0
We multiply parentheses
-8x+1x*7+32=0
Wy multiply elements
-8x+7x+32=0
We add all the numbers together, and all the variables
-1x+32=0
We move all terms containing x to the left, all other terms to the right
-x=-32
x=-32/-1
x=+32
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