(х+3):7=(2х-1):5
5(x+3)=7(2x-1)
5x+15=14x-7
5x-14x=-7-15
-9x=-22
x=22:9
x=2 целых 4/9
5(х+3)=7(2х-1)
5х+15=14х-7
5х-14х=-7-15
-9х=-22
х=-22:-9
х= 22/9
Проверка:
7/9=7/9
(х+3):7=(2х-1):5
5(x+3)=7(2x-1)
5x+15=14x-7
5x-14x=-7-15
-9x=-22
x=22:9
x=2 целых 4/9
(х+3):7=(2х-1):5
5(х+3)=7(2х-1)
5х+15=14х-7
5х-14х=-7-15
-9х=-22
х=-22:-9
х= 22/9
Проверка:
7/9=7/9