Question

Porfavor alguien me ayuda?
Por favor es para hoy.
​

Answer 1

Explicación paso a paso:

$7(x - 1) = 3(x + 2) \\ 7x - 7 = 3x + 6 \\ 7x - 3x = 7 + 6 \\ 4x = 13 \\ x = \frac{13}{4}$

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

$4x - 2(3x - 7) = 2x - 6 \\ 4x - 6x + 14 = 2x - 6 \\ 4x - 6x - 2x = - 14 - 6 \\ 4x - 8x = - 20 \\ - 4x = - 20 \\ x = \frac{ - 20}{ - 4} \\ x =5$

$- 6(z - 1) = - 5(z + 2) \\ - 6z + 6 = - 5z - 10 \\ - 6z + 5z = - 10 - 6 \\ ( - )- z = - 16 \\z = 16$

$4(2x - 4) = - 2(x + 3) \\ 8x - 16 = - 2x + 6 \\ 8x + 2x = 16 + 6 \\ 10x = 22 \\ x = \frac{22}{10} \\ x = \frac{11}{5}$