0.4(X-0.2)+1.5=0.7(2X+1.2)
0.4x-0.08+1.5=1.4x+0.84
0.4x-1.4x=0.08+0.84-1.5
-x=-0.58
x=0.58
0.4(X-0.2)+1.5=0.7(2X+1.2)
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