Question

7,8:2 целые 3/5 = 4,5 : икс

Answer 1

7,8: 2 35=4.5:х
7.8х=2 35*4.5
7.8х=11.7
х=11.2:7.8=11 15: 7 45=565* 5/39
х=5639=1 1739