Question

45：:50 7/9:5/27 8:7/20 4.8:1.2 最简整数比 和比值

Answer 1

45：50=9:10=0.9

7/9:5/27=21/27:5/27=21:5=4.2

8:7/20=160:7=160/7

4.8:1.2=48:12=4:1=4