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80+.70x=20+.80
We move all terms to the left:
80+.70x-(20+.80)=0
We add all the numbers together, and all the variables
.70x+80-(20.8)=0
We add all the numbers together, and all the variables
.70x+59.2=0
We move all terms containing x to the left, all other terms to the right
.70x=-59.2
x=-59.2/.70
x=-84+0.40000000000001/.70
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