Advertisements
Advertisements
Question
Add 2xy, 5xy, −xy
Solution
Required sum = 2xy +5xy + (−xy)
= (2+5-1)xy = 6xy
APPEARS IN
RELATED QUESTIONS
Add the following:
\[m^2 - 4m + 5\]
\[ - 2 m^2 + 6m - 6\]
- m^2 - 2m - 7
_______________
Solve the following equation by the trial-and-error method: x − 7 = 10
Solve the following equation and verify the answer:
4x + 7 = 15
Solve the following equation and verify the answer:
`(3x)/5`=15
Five times the price of a pen is Rs 17 more than three times its price. Find the price of the pen.
Three times a number added to 8 gives 20. Find the number.
If x = 1, y = 2 and z = 3, find the value of x2 + y2 + 2xyz.
Raju’s father’s age is 5 years more than three times Raju’s age. Raju’s father is 44 years old. Set up an equation to find Raju’s age.
Complete the table and by inspection of the table, find the solution to the equation m + 10 = 16.
|
m |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
______ |
|
m + 10 |
______ |
______ |
______ |
______ |
______ |
______ |
______ |
______ |
______ |
______ |
______ |
Solve the following riddles, you may yourself construct such riddles.
| Who am I? |
 |
| Go round a square Counting every corner Thrice and no more! Add the count to me To get exactly thirty four! |
