100+0.20x=80+0.70x

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Solution for 100+0.20x=80+0.70x equation:



100+0.20x=80+0.70x
We move all terms to the left:
100+0.20x-(80+0.70x)=0
We add all the numbers together, and all the variables
0.20x-(0.70x+80)+100=0
We get rid of parentheses
0.20x-0.70x-80+100=0
We add all the numbers together, and all the variables
-0.5x+20=0
We move all terms containing x to the left, all other terms to the right
-0.5x=-20
x=-20/-0.5
x=+40

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