1.առաչադրանք
- ա) (-3/10) + (-4/10) = (-3 – 4) / 10 = -7/10
- բ) (+1/4) + (+2/4) = (1 + 2) / 4 = 3/4
- գ) (-3 3/7) + (-5 3/7) = (-3 – 5) + (3/7 + 3/7) = -8 – (6/7) = -8 6/7
- դ) (+9 1/5) + (+5 1/5) = (9 + 5) + (1/5 + 1/5) = 14 + 2/5 = 14 2/5
- ե) (-1 3/10) + (-1 1/10) = (-1 – 1) + (3/10 + 1/10) = -2 + 4/10 = -1 2/5
- զ) (-2/3) + (-2/9) = (-2*3 – 2) / 9 = (-6 – 2) / 9 = -8/9
2.առաչադրանք
- ա) (+8) + (−4/5) = 8 – 4/5 = 8 – 0.8 = 7.2
- բ) (+1/4) + (-2/3) = 1/4 – 2/3 = (3/12) – (8/12) = -5/12
- գ) (+5/8) + (-1/5) = 5/8 – 1/5 = (25/40) – (8/40) = 17/40
- դ) (+1/17) + (-9 10/17) = 1/17 – (9 + 10/17) = 1/17 – (917 + 10)/17 = 1/17 – (153 + 10)/17 = 1/17 – 163/17 = -162/17
- ե) (+18/8) + (-31/8) = 18/8 – 31/8 = (18 – 31)/8 = -13/8
- զ) (+1 1/25) + (−4/15) = (25/25 + 1/25) – (60/75) = 26/25 – 4/15 = (2615 – 425) / (2515) = (390 – 100) / 375 = 290/375 = 58/75
3.առաչադրանք
- 7/22 + (-1/35) = (7*35 – 22)/770 = (245 – 22)/770 = 223/770
- 21/36 – (-18) = 21/36 + 18 = (21 + 18*36)/36 = (21 + 648)/36 = 669/36
- (-57/17) + (-33/17) = -57/17 – 33/17 = (57 + 33)/17 = 90/17
4.առաչադրանք
-90/17 33/17 + (−57/17) −90/17 33/17 + 57/17 −(−57/17| +−33/17) 90/17 −(33/17 + 57/17)
5.առաչադրանք
-90/17 33/17 + (−57/17) 90/17