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.10x+.05(71-x)=4.90
We move all terms to the left:
.10x+.05(71-x)-(4.90)=0
We add all the numbers together, and all the variables
.10x+.05(-1x+71)-(4.9)=0
We add all the numbers together, and all the variables
.10x+.05(-1x+71)-4.9=0
We multiply parentheses
.10x-0.05x+3.55-4.9=0
We add all the numbers together, and all the variables
0.05x-1.35=0
We move all terms containing x to the left, all other terms to the right
0.05x=1.35
x=1.35/0.05
x=27
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