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1=0.4x-0.6x-13
We move all terms to the left:
1-(0.4x-0.6x-13)=0
We add all the numbers together, and all the variables
-(-0.2x-13)+1=0
We get rid of parentheses
0.2x+13+1=0
We add all the numbers together, and all the variables
0.2x+14=0
We move all terms containing x to the left, all other terms to the right
0.2x=-14
x=-14/0.2
x=-70
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