Question

hitunglah b c dan a .....​

Answer 1

5a - 10 dan 120 saling berpelurus, maka

5a - 10 + 120 = 180

5a = 180 + 10 - 120

5a = 70

a = 70/5

a = 14

2b + 30 = 120

2b = 120 - 30

2b = 90

b = 90/2

b = 45

3c = 120 (karena saling bertolak belakang)

c = 120/3

c = 40