Question

a) x:9 = 35:15
б) 60:15=х : 2
в) 9/2 = х+3/4
г) 7/22 = 28/3х + 4

Answer 1

Пошаговое объяснение:

x:9 = 35:15

(x:9) = (x:9)

(35:15) = (7:3)

x = 21

60:15=х : 2

(60:15) = (4:1)

(x:2) = (x:2)

x=8

9/2 = х+3/4

15/4 - x = 0

9/2 = 1/4 (4 x + 3)

x = 15/4

7/22 = 28/3х + 4

7/22 = (28 x)/3 + 4

-(28 x)/3 - 81/22 = 0

7/22 = 4/3 (7 x + 3)

x = -243/616