# Rational Numbers Class- 7th RS Aggarwal Exe-4 C Goyal Brothers ICSE Math Solution

Rational Numbers Class- 7th RS Aggarwal Exe-4 C Goyal Brothers ICSE Math Solution . We provide step by step Solutions of lesson-4 Rational Numbers for ICSE Class-7 Foundation RS Aggarwal Mathematics of Goyal Brothers Prakashan . Our Solutions contain all type Questions of Exe-4 C to develop skill and confidence. Visit official Website for detail information about ICSE Board Class-7 Mathematics.

## Rational Numbers Class- 7th RS Aggarwal Exe-4 C Goyal Brothers ICSE Math Solution

 Board ICSE Publications Goyal brothers Prakashan Subject Maths Class 7th Chapter-4 Rational Numbers Writer RS Aggrawal Book Name Foundation Topics Solution of Exe-4 C Academic Session 2023 – 2024

### Exercise – 4 C

Rational Numbers Class- 7th RS Aggarwal Exe-4 C Goyal Brothers ICSE Math Solution

#### 1. Add the following rational numbers :

##### (i) (5/11) and (4/11)

Solution: (5/11) and (4/11)

(5/11) + (4/11)

= (5 + 4)/11

= (9/11)

##### (ii) (-3/8) and (5/8)

Solution: (-3/8) and (5/8)

(-3/8) + (5/8)

(-3 + 5)/8

= (2/8)

##### (iii) (-6/13) and (8/13)

Solution: (-6/13) and (8/13)

(-6/13) + (8/13)

= (-6 + 8)/13

= (2/13)

##### (iv) (-8/15) and (-7/15)

Solution: (-8/15) and (-7/15)

(-8/15) + (-7/15)

= ((-8) + (-7))/15

= (-8 – 7)/15

= (-15/15)

##### (v) (-13/20) and (17/20)

Solution: (-13/20) and (17/20)

(-13/20) + (17/20)

= (-13 + 17)/20

= (4/20)

##### (vi) (-3/8) and (5/-8)

Solution: (-3/8) and (5/-8)

(-3/8) + (5/-8)

= (-3 + 5)/(-8)

= (2/-8)

#### 2. Add the following rational numbers :

##### (i) (-2/3) and (3/4)

Solution: (-2/3) and (3/4)

= (-8 + 9)/12

= (1/12)

##### (ii) (-4/9) and (5/6)

Solution: (-4/9) and (5/6)

= (-8 + 15)/18

= (7/18)

##### (iii) (-5/18) and (11/27)

Solution: (-5/18) and (11/27)

= (-15 + 22)/54

= (7/54)

##### (iv) (-7/12) and (-5/24)

Solution: (-7/12) and (-5/24)

= (-14 + (-5)/24

= (-14 – 5)/24

= (-19/24)

##### (v) (-1/18) and (-7/27)

Solution: (-1/18) and (-7/27)

= (-3 + (-14)/54

= (-3 -14)/54

= (-17/54)

##### (vi) (21/-4) and (-11/8)

Solution: (21/-4) and (-11/8)

= (-42 + (-11)/8

= (-42 – 11)/8

= (-53/8)

#### 3. Evaluate :

##### (i) (2/-3) + (-4/9)

Solution: (2/-3) + (-4/9)

= ((-6) + (-4))/9

= (-6 – 4)/9

= (-10/9)

##### (ii) (-1/2) + (-3/4)

Solution: (-1/2) + (-3/4)

= ((-2) + (-3))/4

= (-2 – 3)/4

= (-5/4)

##### (iii) (7/-9) + (-5/6)

Solution: (7/-9) + (-5/6)

= ((-14) + (-15)/18

= (-14 – 15)/18

= (-29/18)

##### (iv) 2 + (-3/4)

Solution: 2 + (-3/4)

= (2/1) + (-3/4)

= (8 – 3)/4

= (5/4)

##### (v) 3 + (-5/6)

Solution: 3 + (-5/6)

= (3/1) + (-5/6)

= (18 + (-5))/6

= (18 – 5)/6

= (13/6)

##### (vi) (-4) + (2/3)

Solution: (-4) + (2/3)

= (-4/1) + (2/3)

= (-12 + 2)/3

= (-10/3)

#### 4. Evaluate :

##### (i) (-3/8) + (5/8) + (7/8)

Solution: (-3/8) + (5/8) + (7/8)

= ((-3) + 5 + 7)/8

= ((-3) + 12)/8

= (9/8)

##### (ii) (11/3) + (-5/3) + (-2/3)

Solution: (11/3) + (-5/3) + (-2/3)

= (11 – 5 – 2)/3

= (11 – 7)/3

= (4/3)

##### (iii) (-1) + (2/-3) + (5/6)

Solution: (-1) + (2/-3) + (5/6)

= ((-6) + (-4) + 5)/6

= (-6 – 4 + 5)/6

= (-10 + 5)/6

= (-5/6)

##### (iv) (7/26) + (-11/13) + 2

Solution: (7/26) + (-11/13) + 2

= (7 – 22 + 52)/26

= (59 – 24)/26

= (37/26)

##### (v) 3 + (-7/8) + (-3/4)

Solution: 3 + (-7/8) + (-3/4)

(3/1) + (-7/8) + (-3/4)

= (24 – 7 – 6)/8

= (24 – 13)/8

= (11/8)

##### (vi) (-13/8) + (7/16) + (-3/4)

Solution: (-13/8) + (7/16) + (-3/4)

= ((-26) + 7 – 12)/16

= (-38 + 7)/16

= (-31/16)

— : end of Rational Numbers Class- 7th RS Aggarwal Exe-4 C Goyal Brothers ICSE Math Solution:–