X = y + 30 (I)
2x + 20 = 3y + 30
2x - 3y = 10 (II)
______________________________
2(y+30) - 3y = 10
2y + 60 - 3y = 10
-y = -50
y = 50
x = y + 30
x = 50 + 30
x = 80
Football team has 80 members, basketball team has 50 members.
2x + 20 = 3y + 30
2x - 3y = 10 (II)
______________________________
2(y+30) - 3y = 10
2y + 60 - 3y = 10
-y = -50
y = 50
x = y + 30
x = 50 + 30
x = 80
Football team has 80 members, basketball team has 50 members.