Solve the following equation by trial and error method: 2y + 4 = … - Vidyadip

Question

Solve the following equation by trial and error method:
2y + 4 = 3y

✓

Answer

The given equation is 2y + 4 = 3y
We guess and try several values of y to find L.H.S. and R.H.S. and stop when L.H.S. = R.H.S.

x	L.H.S.	R.H.S.
1	2 × 1 + 4 = 6	3 × 1 = 3
2	2 × 2 + 4 = 8	3 × 2 = 6
3	2 × 3 + 4 = 10	3 × 3 = 9
4	2 × 4 + 4 = 12	3 × 4 = 12

When y = 4, we have L.H.S. = R.H.S
So, y = 4 is the solution of the given equation.

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