Question

Помогите... плиз...1) y÷51,6=11,2÷34,4 2) m÷25_6=4_7÷20_21 (_это дроб)

Answer 1

34.4у=51.6*11.2
34.4у=577.92
у=577.92:34.4
у=16.8

20/21m=25/6*4/7
20/21m=100/42
m=100/42:20/21=100/42*21/20
m=5/2=2.5

5 3/5x=3 1/2*5 1/4
28/5x=7/2*21/4
28/5x=147/8
x=147/8:28/5=147/8*5/28
x=735/224=3.28125