Add the following: `3/13 + 7/13 + 1/13`

Solve the following: 3/13 - 2/13 + 5/13

solve the following: 4/13 + -5/8 + -8/13 + 9/13

Add the following: 3frac{1}{13} + 1frac{4}{13} + 2frac{3}{13}

Solve the following 7/13 + -9/13 = (--+(-9))/13 = (---)/13

Verify the following: (i) 3/7 times (5/6 + 12/13) = (3/7 times 5/6) + (3/7 times 12/13)

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)

The sum of numbers in the n^(th) group of the following (1,3),(5,7,9,11),(13,15,17,19,21,23),...

4/13 + 9/13 + 2/13 = ?/13

Add the integers in each of the following : 1001, -13