b) 2y + y = 30
3y = 30
y = 30÷3
y = 10
b) 4h+h-2h = 60
5h-2h = 60
3h = 60
h = 60÷3
h = 20
c) 2g - g = 40 -20
g = 20
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b) 2y + y = 30
3y = 30
y = 30÷3
y = 10
b) 4h+h-2h = 60
5h-2h = 60
3h = 60
h = 60÷3
h = 20
c) 2g - g = 40 -20
g = 20