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120x+.30=40+.40x
We move all terms to the left:
120x+.30-(40+.40x)=0
We add all the numbers together, and all the variables
120x-(.40x+40)+.30=0
We add all the numbers together, and all the variables
120x-(.40x+40)+0.3=0
We get rid of parentheses
120x-.40x-40+0.3=0
We add all the numbers together, and all the variables
119.6x-39.7=0
We move all terms containing x to the left, all other terms to the right
119.6x=39.7
x=39.7/119.6
x=23.352941176471/70.35294117647
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