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(-2/3)*x+7/2 = -7*x-(3/4) // + -7*x-(3/4)
(-2/3)*x-(-7*x)+7/2+3/4 = 0
(-2/3)*x+7*x+7/2+3/4 = 0
19/3*x+17/4 = 0 // - 17/4
19/3*x = -17/4 // : 19/3
x = -17/4/19/3
x = -51/76
x = -51/76
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