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-((2/5)*x)-1/2 = -7*x-(29/10) // + -7*x-(29/10)
29/10-((2/5)*x)-(-7*x)-1/2 = 0
(-2/5)*x+7*x-1/2+29/10 = 0
33/5*x+12/5 = 0 // - 12/5
33/5*x = -12/5 // : 33/5
x = -12/5/33/5
x = -4/11
x = -4/11
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