Question
Solve the following equation by trial and error method: $x - 7 = 10$
✓
Answer
The given equation is $x - 1 = 10$ We guess and try several values of $x$ to find $L.H.S.$ and $R.H.S.$ and stop when $L.H.S. = R.H.S.$
When $x = 17$,
we have $L.H.S. = R.H.S$
So $x = 17$ is the solution of the given equation.
| x | L.H.S. | R.H.S. |
| $14$ | $14 - 7 = 7$ | $10$ |
| $15$ | $15 - 7 = 8$ | $10$ |
| $16$ | $16 - 7 = 9$ | $10$ |
| $17$ | $17 - 7 = 10$ | $10$ |
we have $L.H.S. = R.H.S$
So $x = 17$ is the solution of the given equation.
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