Question

Tolong dijawab ya temannn

Answer 1

(180-7x)+(180-5x) = 180-3x
-7x-5x+3x = 180-180-180
-9× = -180
x = 20

jadi sudut yg dkt 7x
180-7x = 180-7(20)
= 180-140
= 40
sudut yg dkt 5x
180-5x = 180-5(20)
= 180-100
= 80

sudut 3x
3x= 3(20)
= 60