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(-7/2)*x+2/5 = (-1/5)*x-1 // - (-1/5)*x-1
(-7/2)*x-((-1/5)*x)+2/5+1 = 0
(-7/2)*x+(1/5)*x+2/5+1 = 0
7/5-33/10*x = 0 // - 7/5
-33/10*x = -7/5 // : -33/10
x = -7/5/(-33/10)
x = 14/33
x = 14/33
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