Answer:
Step-by-step explanation:
5 : 3
5 + 3 = 8
103.2 ÷ 8
12.9
12.9 × 3
38.7
12.9 × 5
64.5
4x +13 +79+79+ 11x-6 = 360
15x +165 = 360
15x = 195
x =13
QRS = 11(13)-6 = 137
3n+5