Question
Solve the following equations by trial and error method:
x + 3 = 12
x + 3 = 12
✓
Answer
x + 3 = 12
Here, L.H.S. = x + 3 and R.H.S. = 12
Therefore, if x = 9, L.H.S. = R.H.S.
Hence, x = 9 is the solution to this equation.
Here, L.H.S. = x + 3 and R.H.S. = 12
|
x
|
L.H.S.
|
R.H.S.
|
Is L.H.S. = R.H.S.
|
|
1
|
1 + 3 = 4
|
12
|
No
|
|
2
|
2 + 3 = 5
|
12
|
No
|
|
3
|
3 + 3 = 6
|
12
|
No
|
|
4
|
4 + 3 = 7
|
12
|
No
|
|
5
|
5 + 3 = 8
|
12
|
No
|
|
6
|
6 + 3 = 9
|
12
|
No
|
|
7
|
7 + 3 = 10
|
12
|
No
|
|
8
|
8 + 3 = 11
|
12
|
No
|
|
9
|
9 + 3 = 12
|
12
|
Yes
|
Hence, x = 9 is the solution to this equation.
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