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0.5x+3.5=-x-1
We move all terms to the left:
0.5x+3.5-(-x-1)=0
We add all the numbers together, and all the variables
0.5x-(-1x-1)+3.5=0
We get rid of parentheses
0.5x+1x+1+3.5=0
We add all the numbers together, and all the variables
1.5x+4.5=0
We move all terms containing x to the left, all other terms to the right
1.5x=-4.5
x=-4.5/1.5
x=-3
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