Find the sum (a) `1/4+3/5`

Find the sum : (i) 5/4 + ((-11)/(4)) , (ii) 5/3 + 3/5 , (iii) (-9)/(10) + 22/15 (iv) (-3)/(-11) + 5/9 , (v) (-8)/(19) + ((-2))/(57) , (vi) (-2)/(3) + 0 (vii) -2'1/3 + 4'3/5

Find the sum 3(1)/(5)+4(3)/(5)+7(2)/(5)

Find the sum 3 C_1 + 5C_2

Find the sum (1^4)/(1xx3)+(2^4)/(3xx5)+(3^4)/(5xx7)+......+(n^4)/((2n-1)(2n+1))

Find the sum:  (i) 5/8+3/(10) (ii) 4 3/4+9 2/5

Find the sum: 4(3)/(5)+2(7)/(8)

Find the sum (-4/9 + (-5)/12 + 1/18)

Find the sum:  (i) 5/6+3+3/4 (ii) 2 3/5+4 7/(10)+2 4/(15)

Find the sum 3/(1xx2)xx1/2+4/(2xx3)xx(1/2)^2+5/(3xx4)xx(1/2)^2+ ton terms.

Find the sum (1^2)/(2)+(3^2)/(2^2)+(5^2)/(2^3)+(7^2)/(2^4)+….oo