0,72 = 72/100 = 18/25
5.083 = 5 + 83/1000 = 5 + 83/1000 = 5000/1000 + 83/1000 = 5083/1000
-2,2 = -2 - 2/10 = -2 - 1/5 = -2 - 0.2 = -2.2
1/8 = 1 ÷ 8 = 0.125
2/43 = 2 ÷ 43 ≈ 0.0465
7/252 = 7 ÷ 252 ≈ 0.0278
3/7 + 0.8 + 2/9 0.53= 3/7 + 0.8 + 2/9 0.53= 3/7 + 0.8 + 0.94= 3/7 + 1.74= (3100 + 7174)/700= (300 + 1218)/700= 1518/700 = 2.1685
1/8 - 1.64= 0.125 - 1.64= -1.515
4.5 ÷ 9/2= 4.5 2/9= 9/2 2/9= 18/18= 1
0,72 = 72/100 = 18/25
5.083 = 5 + 83/1000 = 5 + 83/1000 = 5000/1000 + 83/1000 = 5083/1000
-2,2 = -2 - 2/10 = -2 - 1/5 = -2 - 0.2 = -2.2
1/8 = 1 ÷ 8 = 0.125
2/43 = 2 ÷ 43 ≈ 0.0465
7/252 = 7 ÷ 252 ≈ 0.0278
3/7 + 0.8 + 2/9 0.53
= 3/7 + 0.8 + 2/9 0.53
= 3/7 + 0.8 + 0.94
= 3/7 + 1.74
= (3100 + 7174)/700
= (300 + 1218)/700
= 1518/700 = 2.1685
1/8 - 1.64
= 0.125 - 1.64
= -1.515
4.5 ÷ 9/2
= 4.5 2/9
= 9/2 2/9
= 18/18
= 1