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x-(x*0.7)=70
We move all terms to the left:
x-(x*0.7)-(70)=0
We add all the numbers together, and all the variables
x-(+x*0.7)-70=0
We get rid of parentheses
x-x*0.7-70=0
Wy multiply elements
x-0.7x-70=0
We add all the numbers together, and all the variables
0.3x-70=0
We move all terms containing x to the left, all other terms to the right
0.3x=70
x=70/0.3
x=233+0.10000000000001/0.3
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