2) -2/3 + 13/15 = -10/15 + 13/15 = 3/15 = 1/3) 13/16 + (-9/32) = 13/16 - 9/32 = 26/32 - 9/32 = 17/34) -4 5/9 + (-7 1/6) = -4 - 5/9 - 7 - 1/6 = -11 - 5/9 - 1/6 = -11 - 30/54 - 9/54 = -11 - 39/54 = -11 - 13/18 = -11 13/15) -5 7/8 + (-6 3/10) = -5 - 7/8 - 6 - 3/10 = -11 - 7/8 - 3/10 = -11 - 35/40 - 24/40 = -11 - 59/40 = -11 19/46) -5 13/18 + 12 11/12 = -5 - 13/18 + 12 + 11/12 = 7 2/7) -13 + 7 3/16 = -13 + 113/16 = -13 + 7 1/16 = -5 1/18) -2 3/8 + (-1 5/9) = -2 - 3/8 - 1 - 5/9 = -3 - 3/8 - 5/9 = -3 - 27/72 - 40/72 = -3 - 67/72 = -3 67/79) -8 + 4 5/22 = -8 + 4 + 5/22 = -4 + 5/22 = -4 5/210) -2 9/20 + 5 7/30 = -2 - 9/20 + 5 + 7/30 = 3 1/211) -5 1/4 + 1 3/8 = -5 - 1/4 + 1 + 3/8 = -4 5/8 = -4 5/12) 4 /37 + (-8 9/14) = 4 /37 - 8 - 9/14 = -7 1/14
2) -2/3 + 13/15 = -10/15 + 13/15 = 3/15 = 1/
3) 13/16 + (-9/32) = 13/16 - 9/32 = 26/32 - 9/32 = 17/3
4) -4 5/9 + (-7 1/6) = -4 - 5/9 - 7 - 1/6 = -11 - 5/9 - 1/6 = -11 - 30/54 - 9/54 = -11 - 39/54 = -11 - 13/18 = -11 13/1
5) -5 7/8 + (-6 3/10) = -5 - 7/8 - 6 - 3/10 = -11 - 7/8 - 3/10 = -11 - 35/40 - 24/40 = -11 - 59/40 = -11 19/4
6) -5 13/18 + 12 11/12 = -5 - 13/18 + 12 + 11/12 = 7 2/
7) -13 + 7 3/16 = -13 + 113/16 = -13 + 7 1/16 = -5 1/1
8) -2 3/8 + (-1 5/9) = -2 - 3/8 - 1 - 5/9 = -3 - 3/8 - 5/9 = -3 - 27/72 - 40/72 = -3 - 67/72 = -3 67/7
9) -8 + 4 5/22 = -8 + 4 + 5/22 = -4 + 5/22 = -4 5/2
10) -2 9/20 + 5 7/30 = -2 - 9/20 + 5 + 7/30 = 3 1/2
11) -5 1/4 + 1 3/8 = -5 - 1/4 + 1 + 3/8 = -4 5/8 = -4 5/
12) 4 /37 + (-8 9/14) = 4 /37 - 8 - 9/14 = -7 1/14