**New Learning Composite Mathematics SK Gupta Anubhuti Gangal Class 7 Rational Numbers Self Practice 3C Solution**

**(1) Find each sum.**

(a) 1/5 + 2/-5

(b) 1~3/8 + 3~7/8

(c) -1/4 + 3/-4

(d) -1/10 + (-7/10)

(e) 1~3/4 + (-1~1/4)

(f) 1~7/12 + 11/-12

(g) -4/15 + 4/-15 + -4/15

(h) 17/-30 + 7/30 + 1~7/30

**SOLUTION Number 1:**

**(2) Subtract**

(a) -5/6 from 1/6

(b) 7/8 from 3/-8

(c) -1~3/4 from -2~1/4

(d) -1~3/10 from 7~1/-10

**SOLUTION Number 2:**

**(3) Simplify:**

(a) -15/22 + (7/-22)

(b) -1~4/29 + 2~7/29 + 18/-22

**(4) Evaluate:**

8/17 – x for x = 5/-17

**SOLUTION Number 3:**