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प्रश्न
Solve the following equations.
3 (n - 5) = -21
बेरीज
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उत्तर
3 (n - 5) = -21
Dividing both sides by 3,
`n - 5 = (-21)/3 = -7`
n = − 7 + 5 = −2 (Transposing −5 to R.H.S.)
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5 is the solution of the equation 3x + 2 = 17.
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 |
