Advertisements
Advertisements
प्रश्न
Complete the last column of the table.
| Equation | Value | Say, whether the Equation is Satisfied. (Yes/No) |
| 5x = 25 | x = 5 |
Advertisements
उत्तर
| Equation | Value | Say, whether the Equation is Satisfied. (Yes/No) |
| 5x = 25 | x = 5 | Yes |
Explanation:
5x = 25
L.H.S. = 5x
By putting x = 5,
L.H.S. = 5 × 5 = 25 = R.H.S.
Hence, the equation is satisfied.
APPEARS IN
संबंधित प्रश्न
Subtract the sum of 5x − 4y + 6z and −8x + y − 2z from the sum of 12x − y + 3z and −3x + 5y − 8z.
Simplify:
−a − [a + {a + b − 2a − (a − 2b)} − b]
Write the following statement as an equation:
5 times a number equals 40.
A man earns Rs 25 per hour. How much does he earn in x hours?
The sum of three consecutive natural numbers is 51. Find the numbers.
Write the following statement in the form of the equation:
If you subtract 5 from 6 times a number, you get 7.
Answer the following:
Take Sarita’s present age to be y years
- What will be her age 5 years from now?
- What was her age 3 years back?
- Sarita’s grandfather is 6 times her age. What is the age of her grandfather?
- Grandmother is 2 years younger than grandfather. What is grandmother’s age?
- Sarita’s father’s age is 5 years more than 3 times Sarita’s age. What is her father’s age?
Change the following statements using expressions into statements in ordinary language.
(For example, Given Salim scores r runs in a cricket match, Nalin scores (r + 15) runs. In ordinary language − Nalin scores 15 runs more than Salim.)
A notebook costs ₹ p. A book costs ₹ 3 p.
State which of the following are equations (with a variable). Give reason for your answer. Identify the variable from the equations with a variable.
7 = (11 × 5) − (12 × 4)
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! |
