а) Х/9 = 14/63 реши равенства б) 3/4Х = 1/8 в) 2.2/5:х = 1.1/5:1/4​

X/9=14/63 | *63

7x=14

X=2

3/4x=1/8 | *8x

6=x

2.2/5 : x = 1.1/5 : 1/4

2.2/5 *1/x = 1.1/5 *4

2.2/5x=4.4/5| *5x

2.2 =4.4 x

X =2