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40+0.30=20+.70x
We move all terms to the left:
40+0.30-(20+.70x)=0
We add all the numbers together, and all the variables
-(.70x+20)+40+0.30=0
We add all the numbers together, and all the variables
-(.70x+20)+40.3=0
We get rid of parentheses
-.70x-20+40.3=0
We add all the numbers together, and all the variables
-0.7x+20.3=0
We move all terms containing x to the left, all other terms to the right
-0.7x=-20.3
x=-20.3/-0.7
x=29+3.5527136788005E-15/0.7
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