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.5x+.2(9-x)=3.6
We move all terms to the left:
.5x+.2(9-x)-(3.6)=0
We add all the numbers together, and all the variables
.5x+.2(-1x+9)-(3.6)=0
We add all the numbers together, and all the variables
.5x+.2(-1x+9)-3.6=0
We multiply parentheses
.5x-0.2x+1.8-3.6=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+2.2204460492503E-16/0.3
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