Question

If Rahul gives 5 pencil box to his sister and in each box there are n pencils. Then write an algebraic
expression to represent the remaining number of pencils if his sister has used 2 pencils out of them.

Answer 1

Answer:

5n - 2n = X

This is the equation

Answer 2

Answer:

Solve : (i) 4n - 5 = 10 - n (ii) 5k + 4 = 29.

i) 4n - 5 = 10 -n

4n +n = 10+5

5n = 15

n = 15/5

n = 3.

ii) 5k +4 = 29

5k = 29 -4

5k = 25

k = 25/5

k = 5.