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-13.7x+(-12.7)(1-x)=-13.5
We move all terms to the left:
-13.7x+(-12.7)(1-x)-(-13.5)=0
We add all the numbers together, and all the variables
-13.7x+(-12.7)(-1x+1)-(-13.5)=0
We add all the numbers together, and all the variables
-13.7x+(-12.7)(-1x+1)+13.5=0
We multiply parentheses ..
-13.7x+(+12.7x-12.7)+13.5=0
We add all the numbers together, and all the variables
-13.7x+(12.7x-12.7)+13.5=0
We get rid of parentheses
-13.7x+12.7x-12.7+13.5=0
We add all the numbers together, and all the variables
-1x+0.8=0
We move all terms containing x to the left, all other terms to the right
-x=-0.8
x=-0.8/-1
x=0.8/1
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