## NCERT Class 6 Mathematics Eleventh Chapter Algebra Exercise 11.5 Solution

## EXERCISE 11.5

**(1) State which of the following are equations (with a variable). Give reason for your answer. Identify the variable from the equations with a variable. **

(a) 17 = x + 7

Ans: An equation variable with x.

(e) 5 × 4 – 8 = 2 x

Ans: An equation variable with x.

(f) x – 2 = 0

Ans: An equation variable with

(h) 2n + 1 = 11

Ans: An equation variable with n.

(j) 7 = (11 × 2) + p

Ans: An equation variable with p.

(k) 20 = 5y

Ans: An equation variable with y.

(o) 7 – x = 5

Ans: An equation variable with x.

**(2) Complete the entries in the third column of the table.**

**In case you are missed :- Previous Chapter Exercise Solution**

**(3) Pick out the solution from the values given in the bracket next to each equation. Show that the other values do not satisfy the equation. **

(b) n + 12 = 20 (12, 8, 20, 0)

Or, n = 20 – 12

Or, n = 8

(c) p – 5 = 5 (0, 10, 5 – 5)

Or, p = 5 + 5

Or, p = 10

(e) r – 4 = 0 (4, – 4, 8, 0)

Or, r = 4

(f) x + 4 = 2 (– 2, 0, 2, 4)

Or, x = 2 – 4

Or, x = – 2

(4) (a) Complete the table and by inspection of the table find the solution to the equation m + 10 = 16.

Solution: m + 10 = 16

Or, m = 16 – 10

Or, m = 6

(b) Complete the table and by inspection of the table, find the solution to the equation 5t = 35.

Solution: 5t = 35

Or, z = 12

(d) Complete the table and find the solution to the equation m – 7 = 3.

Solution: m – 7 = 3

Or, m = 3 + 7

Or, m = 10

**In case you are missed :- Next Chapter Exercise Solution**