Question

Ayuda, por favor. Es de geometría

Answer 1

PROBLEMA 3

$5x - 20 = 2x + 10 \\ 5x - 2x = 10 + 20 \\ 3x = 30 \\ x = \frac{30}{3} \\ x = 10$

PROBLEMA 4

$x + 2x - 10 + 3x - 20 + 4x - 30 = 180 \\ 10x - 60 = 180 \\ 10x = 180 + 60 \\ 10x = 240 \\ x = \frac{240}{10} \\ x = 24$