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प्रश्न
______ is the solution of the equation 3x – 2 = 7.
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उत्तर
x = 3 is the solution of the equation 3x – 2 = 7.
Explanation:
Solve the given equation for x,
3x – 2 = 7
⇒ 3x = 7 + 2 ...[Transposing (–2) to RHS]
⇒ 3x = 9
⇒ `(3x)/3 = 9/3` ...[Dividing both sides by 3]
⇒ x = 3
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संबंधित प्रश्न
Solve the following equations.
-4 (2 + x) = 8
Solve: – 2(x + 3) = 8.
Which of the following is not allowed in a given equation?
The solution of which of the following equations is neither a fraction nor an integer?
The equation having – 3 as a solution is ______.
Which of the following equations cannot be formed using the equation x = 7?
If 2x + 3 = 5, then value of 3x + 2 is ______.
If `9/5x = 18/5`, then x = ______.
Match each of the entries in Column I with the appropriate entries in Column II.
| Column I | Column II |
| (i) x + 5 = 9 | (A) `- 5/3` |
| (ii) x – 7 = 4 | (B) `5/3` |
| (iii) `x/12 = -5` | (C) 4 |
| (iv) 5x = 30 | (D) 6 |
| (v) The value of y which satisfies 3y = 5 | (E) 11 |
| (vi) If p = 2, then the value of `1/3 (1 - 3p)` | (F) – 60 |
| (G) 3 |
Seven times a number is 12 less than thirteen times the same number. Find the number.
