Question

y+9=12 solve it in trial method​

Answer 1

Step-by-step explanation:

Put y = 1, then L.H.S = y + 9 = 1 + 9 = 10

Put y = 2, then L.H.S = y + 9 = 2 + 9 = 11

Put y = 3, then L.H.S = y + 9 = 3 + 9 = 12 = R.H.S

Therefore y = 3 is the correct value.