Question

Yg no 19.. tolong ya...

Answer 1

1.(3y-42)+(x+42)=180d
3y+x=180d
2.(2y+7)+(x+42)=180d
2y+x+49=180d
2y+x=131d

Cara Eliminasi
3y+x=180d
2y+x=131d
Y=49d

2y+x=131d
98+x=131d
X=33d
Y-x=
49-33=16 :)