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40X-10 = 40X+4
40 40
40X-10 =40X+4
40X-40X=4+10
X=14
x-2/8 = x+4/20
40(x-2/8 = x+4/20)
5x-10 = 2x+8
5x-2x = 8+10
3x = 18
x = 18/3
x = 6