Answer:
a. x=34, y=98
b. x=50, y=100
c. x=20, y=80
Explanation:
a. 2x+30+3x-20=180
5x+10=180
5x=170
x = 34
2(34) + 30 = y
68 + 30 = y
y = 98
b. 2x-80+x+50=180
3x-30=180
3x=150
x = 50
(50)+50=y
y = 100
c. 5x+4x=180
9x=180
x = 20
4(20) = y
y = 80
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