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2(8-x)=7
We move all terms to the left:
2(8-x)-(7)=0
We add all the numbers together, and all the variables
2(-1x+8)-7=0
We multiply parentheses
-2x+16-7=0
We add all the numbers together, and all the variables
-2x+9=0
We move all terms containing x to the left, all other terms to the right
-2x=-9
x=-9/-2
x=4+1/2
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