Question

D)3×+1=3-(2-2×)
E)2(2+×)-(6-7×)=13×-(1+4×)
F)6+9×-15+21×=-2×+1
G)5×+4=3×+3(×-2)-4
Ayuda por favor es urgente ​

Answer 1

Explicación paso a paso:

$3x + 1 = 3 - (2 - 2x) \\ 3x + 1 = 3 - 2 + 2x \\ 3x + 1 = 1 +2x \\ 3x = 2x \\ 3x - 2x = 0 \\ x = 0 \\ \\ 2(2 + x) - (6 - 7x) = 13x - (1 + 4x) \\ 4 + 2x - 6 + 7x = 13x - 1 - 4x \\ - 2 + 9x = 9x - 1 \\ - 2 = - 1 \\ el \: enunciado \: es \: falso \\ \\ 6 + 9x - 15 + 21x = - 2x + 1 \\ - 9 + 30x = - 2x + 1 \\ 30x + 2x = 1 + 9 \\ 32x = 10 \\ x = \frac{5}{16} \\ \\ 5x + 4 = 3x + 3(x - 2) - 4 \\ 5x + 4 = 6x - 10 \\ 5x - 6x = - 10 - 4 \\ - x = - 14 \\ x = 14$