1) 2/3 +(-10 1/3)= 2/3 +(-31/3)= 2-31/3 = -29/3 = -9 2/3
4)2/8 +(-1 5/6)= 2/8 +(-11/6)= 2*2-3*11/18 = -29/18 = 1 11/18)
2) -3/8 + 4/7 = -7*3+8*4/56 = 11/56
5) 4/5+(-2/7)= 7*4-5*2/35 = 18/35
3) 3/5 +(-1 5/6)= 3/5 +(-11/6)= 6*3-5*11/30 = -37/30 = -1 7/30
6) -9 + 2/9 = -8 7/9
Смотри решение на фото
1) 2/3 +(-10 1/3)= 2/3 +(-31/3)= 2-31/3 = -29/3 = -9 2/3
4)2/8 +(-1 5/6)= 2/8 +(-11/6)= 2*2-3*11/18 = -29/18 = 1 11/18)
2) -3/8 + 4/7 = -7*3+8*4/56 = 11/56
5) 4/5+(-2/7)= 7*4-5*2/35 = 18/35
3) 3/5 +(-1 5/6)= 3/5 +(-11/6)= 6*3-5*11/30 = -37/30 = -1 7/30
6) -9 + 2/9 = -8 7/9
Смотри решение на фото