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Q= 5x/7
Q-P = 5x/7 - 2x/7 =30
3x/7 = 30
kali silang
jadi 3x = 30 × 7
3x = 210
x = 70
p= 2x/7 = 2 × 70 / 7 = 140/7 =20
q=5x/7 = 5 × 70 /7 = 350 /7 = 50
P = 2/3 X 30 = 20
Q = 5/3 X 30 = 50