Question

(m-9)+30-50=3 va rog

Answer 1

$(m-9)+30-50=3 \\\\ (m-9)-20=3 \\\\ m-9-20=3 \\\\ m-29=3 \\\\ m=3+29 \\\\ \boxed{m=32}$

Answer 2

(m-9)+30-50=3
(m-9)+30=53
m-9=23
m=23+9
m=32