Question

1)3/5 = х/75 ; 2) 7/у = 28/36 ; 3) 6/11 = 54/х

Answer 1

1)
3/5 = х/75 ;
5*x=75*3
5x=225
x=225:5
x=45

2)
7/у = 28/36 ;
28*y=36*7
28y=252
y=252:28
y=9

3)
6/11 = 54/х
6*x=54*11
6x=594
x=594:6
x=99

Answer 2

спс