Question

Ayuda por favor son ecuaciones ​

Answer 1

PROBLEMA 1

$\frac{2x}{2} + \frac{9x}{3} - \frac{10}{5} + \frac{20}{4} = 0 \\ x + 3x - 2 + 5 = 0 \\ 4x + 3 = 0 \\ 4x = - 3 \\ x = \frac{ - 3}{4}$

PROBLEMA 2

$12 - 9 - x = 60 \\ 3 - x = 60 \\ 3 - 60 = x \\ - 57 = x$

PROBLEMA 3

$7x + 8x = 3x + 60 - 12 \\ 15x = 3x + 48 \\ 15x - 3x = 48 \\ 12x = 48 \\ x = \frac{48}{12} \\ x = 4$

PROBLEMA 4

$4x + 6x = 20 + 4x - 8 \\ 10x = 4x + 12 \\ 10x - 4x = 12 \\ 6x = 12 \\ x = \frac{12}{6} \\ x = 2$

PROBLEMA 5

$13 - x = 21 - 5x \\ 5x - x = 21 - 13 \\ 4x = 8 \\ x = \frac{8}{4} \\ x = 2$

PROBLEMA 6

$40x - 9 = \frac{40}{3} \\ 3(40x - 9) = 40 \\ 120x - 27 = 40 \\ 120x = 40 + 27 \\ 120x = 67 \\ x = \frac{67}{120} \\ x = \frac{67}{120}$

PROBLEMA 7

$\frac{x}{3} - \frac{3}{15} = \frac{24}{5} \\ \frac{x}{3} - \frac{1}{5} = \frac{24}{5} \\ \frac{x}{3} = \frac{24}{5} + \frac{1}{5} \\ \frac{x}{3} = \frac{25}{5} \\ \frac{x}{3} = 5 \\ x = 5 \times 3 \\ x = 15$

PROBLEMA 8

$17x = 425 \\ x = \frac{425}{17} \\ x = 25$

PROBLEMA 9

$\frac{3x}{2} + 12 = 16- 5 \\ \frac{3x}{2} + 12 = 11 \\ \frac{3x}{2} = 11 - 12 \\ \frac{3x}{2} = - 1 \\ 3x = - 1 \times 2 \\ 3x = - 2 \\ x = \frac{ - 2}{3}$