Advertisements
Advertisements
प्रश्न
Solve the following equation by the trial-and-error method: 2x − 3 = 9
उत्तर
2x − 3 = 9
We try several values of x until we get the L.H.S. equal to the R.H.S.
| x | L.H.S. | R.H.S. | Is L.H.S. = R.H.S.? |
| 1 | 2 × 1 − 3 = −1 | 9 | No |
| 2 | 2 × 2 − 3 = 1 | 9 | No |
| 3 | 2 × 3 − 3 = 3 | 9 | No |
| 4 | 2 × 4 − 3 = 5 | 9 | No |
| 5 | 2 × 5 − 3 = 7 | 9 | No |
| 6 | 2 × 6 − 3 = 9 | 9 | Yes |
∴ x = 6
APPEARS IN
संबंधित प्रश्न
Write the given equation in statement form:
`(3m)/5 = 6`
Different mathematical operations are given in the two rows below. Find out the number you get in each operation and make equations.
16 ÷ 2; 5 × 2; 9 + 4; 72 ÷ 3; 4 + 5; 8 × 3; 19 - 10; 10 - 2; 37 - 27; 6 + 7
Add 3x, 7x
Add 6a3, − 4a3, 10a3, −8a3
Write a statement for the equation, given below:
11 + 3x = 17
Solve the following equation and verify the answer:
3(x + 6) + 2(x + 3) = 64
Solve the following equation and verify the answer:
Three times a number added to 8 gives 20. Find the number.
Write 'T' for true and 'F' for false for the statement given below:
2x + 3 = 5 is a linear equation.
Given Sara’s age today to be y years. Think of her age in the future or in the past. What will the following expression indicate?
y + 7, y − 3, `"y" + 4 1/2`, `"y" - 2 1/2`
