Answer:
x=10
Step-by-step explanation:
P+S=140
(5x+30)+80=140
5x+30=80
5x=50
6
Sun of P and S = 140
Measure of S = 80
Measure of P = 5x + 30
5x + 30 + 80 = 140
5x + 110 = 140
5x = 140 - 110
5x = 30
x = 30 ÷ 5
x = 6
