Question

CALCULA X ayuda porfavor :(



...... nadie me ayudo :(

Answer 1

PROBLEMA 1

$x + 20 + 30 = 80 + 40 \\ x + 50 = 120 \\ x = 120 - 50 \\ x = 70$

PROBLEMA 2

$x + 10 + 20 = 50 + 40 \\ x + 30 = 90 \\ x = 90 - 30 \\ x = 60$

PROBLEMA 3

$2x + x = 70 + 50 \\ 3x = 120 \\ x = \frac{120}{3} \\ x = 40$

PROBLEMA 4

$x + 5 + x = 45 + 10 \\ 2x + 5 = 55 \\ 2x = 50 \\ x = \frac{50}{2} \\ x = 25$