Question

Ecuaciónes con la incógnita x

Answer 1

x . 3 +4= 16

x-3+7=7

:D

Answer 2

$\frac{12}{x+1} = 26$

$\frac{12}{26} = x+1$

$x = \frac{6}{13} - 1$

$x = - \frac{7}{13}$

$\frac{x+2}{3} = \frac{x+1}{5}$

$5(x+2) = 3(x+1)$

$5x+10 = 3x+3$

$2x = -7$

$x = - \frac{7}{2}$

$\frac{12}{x-1} = \frac{6}{x-2}$

$12(x-2) = 6(x-1)$

$2(x-2) = x-1$

$2x-4 = x-1$

$x = 3$