Question

por favor ayuda! para hoy ​

Answer 1

PROBLEMA 4

$7x + 5x = 180 \\ 12x = 180 \\ x = \frac{180}{12} \\ x = 15$

PROBLEMA 5

$5x + 3x + 2x + 90 = 360 \\ 10x + 90 = 360 \\ 10x = 360 - 90 \\ 10x = 270 \\ x = \frac{270}{10} \\ x = 27$

PROBLEMA 6

$4x + x = 180 \\ 5x = 180 \\ x = \frac{180}{5} \\ x = 36$