а) 5/9 + 1/6 = 10/18 + 3/18 = 13/18
b) 3 1/3 + 1 2/5 = 3 + 1 + 1/3 + 2/5 = 5 3/15 + 6/15 = 5 9/15 = 5 3/5
v) 4/7 * 15/15 = 60/105 = 4/7
g) 24 * 3/8 = 72/8 = 9
g) 3/4 - 3/8 = 6/8 - 3/8 = 3/8
e) 1 1/15 - 2/3 = 1 - (15/15) - 10/15 = 1 - 1 - 2/3 = -2/3
e) 1 1/3 ÷ 5/8 = 1 + 1/3 ÷ 5/8 = 1 + 8/24 ÷ 5/8 = 1 + 2/3 = 1 2/3
z) 5/6 ÷ 30 = 5/6 * 1/30 = 5/180 = 1/36
а) 5/9 + 1/6 = 10/18 + 3/18 = 13/18
b) 3 1/3 + 1 2/5 = 3 + 1 + 1/3 + 2/5 = 5 3/15 + 6/15 = 5 9/15 = 5 3/5
v) 4/7 * 15/15 = 60/105 = 4/7
g) 24 * 3/8 = 72/8 = 9
g) 3/4 - 3/8 = 6/8 - 3/8 = 3/8
e) 1 1/15 - 2/3 = 1 - (15/15) - 10/15 = 1 - 1 - 2/3 = -2/3
e) 1 1/3 ÷ 5/8 = 1 + 1/3 ÷ 5/8 = 1 + 8/24 ÷ 5/8 = 1 + 2/3 = 1 2/3
z) 5/6 ÷ 30 = 5/6 * 1/30 = 5/180 = 1/36