Simplification ratio: 40:16 102 / 68 4 / 7:21 / 20 1:0.25 1.35:9.25 8 / 7.2 below there are ~ brothers and sisters, help me! Ratio: 51:34 13:1 / 3 7 / 15:13 / 6 63.2/6 4.5:0.35 23 / 25:46 / 5

Simplification ratio: 40:16 102 / 68 4 / 7:21 / 20 1:0.25 1.35:9.25 8 / 7.2 below there are ~ brothers and sisters, help me! Ratio: 51:34 13:1 / 3 7 / 15:13 / 6 63.2/6 4.5:0.35 23 / 25:46 / 5


40:16=5:2
102/68 =51:34
.



19.76 ÷ 5.5 vertical calculation, except for two decimal places,





5.06 * 7.2 (calculated by vertical plan)





6.3 in addition to 18 columns of vertical calculation, and check calculation,