Question
Solve the following equation by trial and error method:
2x - 3 = 9
2x - 3 = 9
✓
Answer
The given equation is 2x - 3 = 9
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 = 6, we have L.H.S. = R.H.S
So, x = 6 is the solution of the given equation.
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.
|
x
|
L.H.S.
|
R.H.S.
|
|
3
|
2 × 3 - 3 = 3
|
9
|
|
4
|
2 × 4 - 3 = 5
|
9
|
|
5
|
2 × 5 - 3 = 7
|
9
|
|
6
|
2 × 6 - 3 = 9
|
9
|
So, x = 6 is the solution of the given equation.
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