Question

ayuda plisssssss
doy todo​

Answer 1

PROBLEMA 1

$4x + 10 = 30 + x + 25 + 15 \\ 4x + 10 = x + 70 \\ 4x - x = 70 - 10 \\ 3x = 60 \\ x = \frac{60}{3} \\ x = 20$

PROBLEMA 2

AB es la mediana

$AB = \frac{30 + x + 20 - x}{2} \\ AB = \frac{50}{2} \\ AB = 25 \: cm$