Question

aplicar la propiedad distributiva:

3 (x-6) = 2(9-3x)

(6+4x):2+5 = -(x-2)

-5-4 (x+1) = x+11

2•(x-3)-3•(2x-5) = 1

(12x-8):(-4) = -2x-3​​

Answer 1

Respuesta:

$3 (x-6) = 2(9-3x) \\ 3x - 18 = 18 - 6x \\ 3x + 6x = 18 + 18 \\ 9x = 36 \\ x = \frac{36}{9} \\ x = 4$

$(6+4x):2+5 = -(x-2) \\ 3 + 2x + 5 = - x + 2 \\ 8 + 2x = - x + 2 \\ 2x + x = 2 - 8 \\ 3x = - 6 \\ x = \frac{ - 6}{3} \\ x = - 2$

$-5-4 (x+1) = x+11 \\ - 5 - 4x - 4 = x + 11 \\ - 9 - 4x = x + 11 \\ - 9 - 11 = x + 4x \\ - 20 = 5x \\ \frac{ - 20}{5} = x \\ - 4 = x$

$2•(x-3)-3•(2x-5) = 1 \\ 2x - 6 - 6x + 15 = 1 \\ - 4x + 9 = 1 \\ 9 - 1 = 4x \\ 8 = 4x \\ \frac{8}{4} = x \\ 2 = x$

$(12x-8):(-4) = -2x-3 \\ - 3x + 2 = - 2x - 3 \\ 2 + 3 = - 2x + 3x \\ 5 = x$