Question

решить уравнение 839

Answer 1

1) (51/14) / (9/7) = х / (15/10)
(9/7)*х=(51/14)*(15/10)
(9/7)х=(153/14)
18х=153
х= (153/18)
х=8,5

Answer 2

(38/15)z= (15/10)*(19/5)

Answer 3

(38/15)z=(57/10)

Answer 4

z=(57/10)/(15/38)

Answer 5

z=(57/10)*(38/15)

Answer 6

z=57/25