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)`

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: (11)/(12)+(-17)/3+(11)/2+(-25)/2 (ii) (-6)/7+(-5)/6+(-4)/9+(-15)/7

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)

Find the sum of 1/8+5/12+2/7+7/12+9/7+(-5/16)

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

Find the sum to n terms of each of the following series : 1.3 .5 + 3.5.7 + 5.7.9+…

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

Evaluate each of the following: -2-5/9 (ii) (-3)/(-8)-(-2)/7 (iii) (-4)/(13)-(-5)/(26)

Evaluate each of the following: -2-(5)/(9)(ii)(-3)/(-8)-(-2)/(7) (iii) (-4)/(13)-(-5)/(26)

Simplify: 2/3+1/6-2/9 (ii) 12-3 1/2 (iii) 7 5/6-4 3/8+2 7/(12)