0.4x+0.9/0.5-0.03+0.02x=x-5/2
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![0.4x+0.9/0.5-0.03+0.02x=x-5/2](/uploads/image/z/2701204-52-4.jpg?t=0.4x%2B0.9%2F0.5-0.03%2B0.02x%3Dx-5%2F2)
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0.4x+0.9/0.5-0.03+0.02x=x-5/2
0.4x+0.9/0.5-0.03+0.02x=x-5/2
0.4x+0.9/0.5-0.03+0.02x=x-5/2
(0.4+0.02-1)X=-5/2+0.03-9/5
-0.58X=-4.27
X=7.362068965517241379310344827586.