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0.3x+(2x-1)=0.5x-4
We move all terms to the left:
0.3x+(2x-1)-(0.5x-4)=0
We get rid of parentheses
0.3x+2x-0.5x-1+4=0
We add all the numbers together, and all the variables
1.8x+3=0
We move all terms containing x to the left, all other terms to the right
1.8x=-3
x=-3/1.8
x=-1+1/1.5
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