Advertisements
Advertisements
प्रश्न
Find the sum of the following expressions
mn + t, 2mn – 2t, – 3t + 3mn
Advertisements
उत्तर
(mn + t) + (2mn – 2t) + (– 3t + 3mn)
= mn + t + 2mn – 2t + (– 3t) + 3mn
= (mn + 2mn + 3mn) + (t – 2t – 3t)
= (1 + 2 + 3)mn + (1 – 2 – 3)t
= 6mn + (1 – 5)t
= 6mn + (– 4)t
= 6mn – 4t
APPEARS IN
संबंधित प्रश्न
Add: t - 8tz, 3tz - z, z - t
Subtract: 5a2 - 7ab + 5b2 from 3ab - 2a2 -2b2
Subtract: 4pq - 5q2 - 3p2 from 5p2 + 3q2 - pq
What should be added to x2 + xy + y2 to obtain 2x2 + 3xy?
What should be taken away from 3x2 - 4y2 + 5xy + 20 to obtain - x2 - y2 + 6xy + 20?
Add the following algebraic expression:
3a2b, − 4a2b, 9a2b
Subtract:
2a − b from 3a − 5b
Subtract:
\[x^2 y - \frac{4}{5}x y^2 + \frac{4}{3}xy \text { from } \frac{2}{3} x^2 y + \frac{3}{2}x y^2 - \frac{1}{3}xy\]
The addition of 3mn, – 5mn, 8mn and – 4mn is
At age of 2 years, a cat or a dog is considered 24 “human” years old. Each year, after age 2 is equivalent to 4 “human” years. Fill in the expression [24 + 
(a – 2)] so that it represents the age of a cat or dog in human years. Also, you need to determine for what ‘a’ stands for. Copy the chart and use your expression to complete it.
| Age | [24 +  (a – 2)] |
Age (Human Years) |
| 2 | ||
| 3 | ||
| 4 | ||
| 5 | ||
| 6 |
