Advertisements
Advertisements
प्रश्न
Check whether the value given in the bracket is a solution to the given equation or not:
7n + 5 = 19 (n = − 2)
Advertisements
उत्तर
7n + 5 = 19 (n = −2)
Putting n = −2 in
L.H.S. = 7n + 5
= 7 × (−2) + 5
= −14 + 5
= −9 ≠ 19
As L.H.S. ≠ R.H.S.,
Therefore, n = −2 is not a solution of the given equation, 7n + 5 = 19.
APPEARS IN
संबंधित प्रश्न
Add 7xyz, − 5xyz, 9xyz, −8xyz
Verify by substitution that the root of 3 + 2x = 9 is x = 3.
Solve the following equation by the trial-and-error method: x − 7 = 10
Solve the following equation by the trial-and-error method: 4x = 28
The number of boys in a school is 334 more than the number of girls. If the total strength of the school is 572, find the number of girls in the school.
Write 'T' for true and 'F' for false for the statement given below:
The coefficient of x in 5xy is 5.
One-sixth of a number when subtracted from the number itself gives 25. The number is _______
The equation 4x = 16 is satisfied by the following value of x ______.
Meena, Beena and Leena are climbing the steps to the hill top. Meena is at step s, Beena is 8 steps ahead and Leena 7 steps behind. Where are Beena and Meena? The total number of steps to the hill top is 10 less than 4 times what Meena has reached. Express the total number of steps using s.
Solve the following riddles, you may yourself construct such riddles.
| Who am I? |
 |
| I am a special number Take away from me a six! A whole cricket team You will still be able to fix! |
