Question

Tolong dijawab teman teman dengan benar​

Answer 1

3y = 105⁰

3y + 4x - 5 = 180

105 + 4x - 5 = 180

4x = 180 - 105 + 5

4x = 80

x = 80/4

x = 20⁰

3y + 4x - 5 = 180

3y + 4•20 - 5 = 180

3y + 80 - 5 = 180

3y = 180 - 80 + 5

3y = 105

y = 105/3

y = 35

y : x = 35 : 20 = 7 : 4 (C)