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0.3x+0.6(200)-x=57*20
We move all terms to the left:
0.3x+0.6(200)-x-(57*20)=0
We add all the numbers together, and all the variables
0.3x-x+0.6200-1140=0
We add all the numbers together, and all the variables
-0.7x-1139.38=0
We move all terms containing x to the left, all other terms to the right
-0.7x=1139.38
x=1139.38/-0.7
x=-1627+0.48000000000025/0.7
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