Add:
(i)`-3/4` and `-4/5` (ii) `2/7` and `2`

Find the product of (i) 1/2 and 5/8 , (ii) 1/3 and 7/5 , (iii) 4/3 and 5/2

Add the rational numbers: (3)/(4) and (-5)/(8)quad (ii) (5)/(-9) and (7)/(3)

Add2(4)/(5) and 3(5)/(6)

Add: 4/5\ a n d\ 7/(15)

Add: (i) 7/(10)+2/(15) (ii) 2 2/3+3 1/2

Add: 2 (4)/5\ a n d\ \ 3 5/6

Evaluate (i) 3/2 xx 4/5+3/5 xx 4/5 (ii) 14/3 xx 7/2-1/3 xx 7/2

Add the following: (4)/(7) and (-5)/(7)

Add: (i) 3x, 7x (ii) 7y, -9y (iii) 2xy, 5xy, -xy (iv) 3x, 2y (v) 2x^(2), -3x^(2), 7x^(2) (vi) 7xyz, -5xyz, 9xyz, - 8xyz (vii) 6a^(3) , - 4a^(3), 10 a^(3), - 8a^(3) (viii) x^(2) - a^(2), -5x^(2) + 2a^(2), -4x^(2) + 4a^(2)