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.55x+.4x=x-3
We move all terms to the left:
.55x+.4x-(x-3)=0
We add all the numbers together, and all the variables
0.95x-(x-3)=0
We get rid of parentheses
0.95x-x+3=0
We add all the numbers together, and all the variables
-0.05x+3=0
We move all terms containing x to the left, all other terms to the right
-0.05x=-3
x=-3/-0.05
x=+60
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