40
13 - 4 + 12 = 21
11/4 + 2/3 = 13/12 + 8/12 = 111/12
13 - 12 + 5 = 6
13 + -12 - 5 = -4 13 + -12 = 1 - 5 = -4
(1/3) + (1/4) + (1/2) = (4/12) + (3/12) + (6/12) = (13/12) or 1 and 1/12
13
The given expression can be simplified to: 14k-12
2(1+2+3+4+5+6+7+8+9+10+11+12+13+14) is the same as the question of the next part is supposed to be 14 plus 14. the answer is simply 1+2 and so on until 14, and then multiply by 2. The answer is 210.
13/12
2/12 + 2/12 + 4/12 + 9/12 + 6/12 = 23/12 or 1 and 11/12
3/4+1/3= 9/12+4/12= 13/12
2 + 5 + (3 x 2) + 4 +2 + 17 + (2 - 13) + 5 = 30