Question

rezolvă pas cu pas: (23-m)×(9:3)+108 ×7=900-84

Answer 1

(23-m)x3+108x7=816
(23-m)x3+756=816
(23-m)x3=816-756
(23-m)x3=60
23-m=60:3
23-m=20
23-20=m
m=3

                       =