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103-x+2x=6x-7.x
We move all terms to the left:
103-x+2x-(6x-7.x)=0
We add all the numbers together, and all the variables
-x+2x-(-1x)+103=0
We add all the numbers together, and all the variables
x-(-1x)+103=0
We get rid of parentheses
x+1x+103=0
We add all the numbers together, and all the variables
2x+103=0
We move all terms containing x to the left, all other terms to the right
2x=-103
x=-103/2
x=-51+1/2
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