Find the sum. a)2`1/5`+3`2/5`
b)9`3/8`+6`5/8`

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

Evaluate the sum: 2/(9)+3(2)/(5)

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

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

Evaluate the sum: 5/(8)+3/(8)

Find the sum of 7 terms of the sequence (1/5+2/(5^2)+3/(5^3)),\ (1/(5^4)+2/(5^5)+3/(5^6)),\ (1/(5^7)+2/(5^8)+3/(5^9)),\ ,

Re- arrange suitably and find the sum: 5/3+(11)/2+\ (-9)/4+\ (-8)/3+\ (-7)/2

Re-arrange suitably and find the sum in each of the following: 3/5+7/3+9/5+(-13)/(15)+(-7)/3 (ii) 4/(13)+(-5)/8+(-8)/(13)+9/(13)

Re-arrange suitably and find the sum in each of the following: 2/3+(-4)/5+1/3+2/5 (ii) 1/8+5/(12)+2/7+7/(12)+9/7+(-5)/(16)

Prove that : Find the sum of the infinite series 1+(2)/(3).(1)/(2)+(2.5)/(3.6)((1)/(2))^(2)+(2.5.8)/(3.6.9)((1)/(2))^(3)+......oo