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12.5=10.54x+(1-x)*12.79
We move all terms to the left:
12.5-(10.54x+(1-x)*12.79)=0
We add all the numbers together, and all the variables
-(10.54x+(-1x+1)*12.79)+12.5=0
We calculate terms in parentheses: -(10.54x+(-1x+1)*12.79), so:We get rid of parentheses
10.54x+(-1x+1)*12.79
We multiply parentheses
10.54x-12.79x+12.79
We add all the numbers together, and all the variables
-2.25x+12.79
Back to the equation:
-(-2.25x+12.79)
2.25x-12.79+12.5=0
We add all the numbers together, and all the variables
2.25x-0.29=0
We move all terms containing x to the left, all other terms to the right
2.25x=0.29
x=0.29/2.25
x=0.29/2.25
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