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0.1x+5=-0.20x+20
We move all terms to the left:
0.1x+5-(-0.20x+20)=0
We add all the numbers together, and all the variables
0.1x-(-0.2x+20)+5=0
We get rid of parentheses
0.1x+0.2x-20+5=0
We add all the numbers together, and all the variables
0.3x-15=0
We move all terms containing x to the left, all other terms to the right
0.3x=15
x=15/0.3
x=50
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