Question

vă rog repede dau coroană​

Answer 1

m(A) + m(B) + m(C) = 180

3m(B) - 15 + m(B) + 5m(B) + 6 = 180

9m(B) - 9 = 180

9m(B) = 189

m(B) = 21 grade

m(A) = 3x21 - 15 = 63 - 15

m(A) = 48 grade

m(C) = 5x21 + 6 = 105 + 6

m(C) = 111 grade