**New Learning Composite Mathematics Class 6 SK Gupta Anubhuti Gangal Algebra Chapter 7G Solution**

**(1) **(a) 3a + 2 = 11

Or, 3a = 11 – 2

Or, 3a = 9

Or, a = 9/3

∴ a = 3

(b) 5P – 1 = 9

Or, 5P = 9 + 1

Or, 5P = 10

Or, P = 10/5

∴ P = 2

(c) 45 = – 7d – 4

Or, – 7d = 45 + 4

Or, – 7d = 49

Or, d = 49/-7

∴ d = – 7

(d) x/2 +10 = 13

Or, x/2 = 13 – 10

Or, x/2 = 3

Or, x = 3X2

∴ x = 6

(e) 9 (x – 3) = 54

Or, 9x – 27 = 54

Or, 9x = 54 + 27

Or, 9x = 81

Or, x = 81/9

∴ x = 9

(f) 17 = 3 (p – 5) + 8

Or, 17 = 3P – 15 + 8

Or, 3P = 17 + 15 – 8

Or, 3P = 24

∴ P = 24/3

= 8

**(2) **(a) 28 – f = 15

Or, – f = 15 – 28

Or, – f = – 13

∴ f = 13 (Ans)

(b) Let, the no. be x

(x X 7) – 18 = 31

Or, 7x – 18 = 31

Or, 7x = 31 + 18

Or, 7x = 49

Or, x = 49/7

∴ x = 7 (Ans)

Ex 7, h