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5(x-1)+16(2x+3)=3(2x-7)-x ..... Aplicamos prop distributiva
5x - 5*1 + 16*2x + 16*3 = 3*2x - 3*7 - x
5x - 5 + 32x + 48 = 6x - 21 - x
37x +43 = 5x - 21
37x -5x = -21 - 43
32x = -64
x = -64/32
x = - 2 / Rpta
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