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-((2/5)*x)-1 = x-(41/20) // - x-(41/20)
41/20-((2/5)*x)-x-1 = 0
(-2/5)*x-x+41/20-1 = 0
21/20-7/5*x = 0 // - 21/20
-7/5*x = -21/20 // : -7/5
x = -21/20/(-7/5)
x = 3/4
x = 3/4
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