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80+.7x=50+.9(150)
We move all terms to the left:
80+.7x-(50+.9(150))=0
We add all the numbers together, and all the variables
.7x+80-(50.915)=0
We add all the numbers together, and all the variables
.7x+29.085=0
We move all terms containing x to the left, all other terms to the right
.7x=-29.085
x=-29.085/.7
x=-41+0.385/.7
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