## ML Aggarwal Class 7 Solutions for ICSE Maths Chapter 9 Linear Equations and Inequalities Ex 9.1

Solve the following (1 to 9) equations:

Question 1.

(i) 2 (3 – 2x) = 13

(ii) \(\frac { 3 }{ 5 }\) y – 2 = \(\frac { 7 }{ 10 }\)

Solution:

Question 2.

Solution:

Question 3.

(i) 7(x – 2) = 2 (2x – 4)

(ii) 21 – 3(x – 7) = x + 20

Solution:

Question 4.

Solution:

Question 5.

Solution:

Question 6.

Solution:

Question 7.

Solution:

Question 8.

(i) y + 1.2y = 4.4

(ii) 15% of x = 21

Solution:

Question 9.

(i) 2p + 20% of (2p – 1) = 7

(ii) 3 (2x – 1) + 25% of x = 97

Solution:

Question 10.

Find the value of p if the value of x^{4} – 3x^{3} – px – 5 is equal to 23 when x = -2.

Solution: