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.5x+.2(18-x)=5.4
We move all terms to the left:
.5x+.2(18-x)-(5.4)=0
We add all the numbers together, and all the variables
.5x+.2(-1x+18)-(5.4)=0
We add all the numbers together, and all the variables
.5x+.2(-1x+18)-5.4=0
We multiply parentheses
.5x-0.2x+3.6-5.4=0
We add all the numbers together, and all the variables
0.3x-1.8=0
We move all terms containing x to the left, all other terms to the right
0.3x=1.8
x=1.8/0.3
x=6+2.22044604925E-16/0.3
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