1) 3(х-2)=х+2. 2) 5-2(х-1)=4-х. 3) (7х++3)=5 - вопрос №91192401322252143735 от MrShkololo 20.11.2020 22:33

Question

Математика: 1) 3(х-2)=х+2. 2) 5-2(х-1)=4-х. 3) (7х++3)=5

MrShkololo · Answer

1. 3 ( х - 2 ) = х + 23х - 6 = х + 23х - х = 2 + 62х = 8х = 4.2. 5 - 2 ( х - 1 ) = 4 - х5 - 2х + 2 = 4 - х-2х + х = 4 - 2 - 5-х = -3х = 33. ( 7х + 1 ) - ( 9х + 3 ) = 57х + 1 - 9х - 3 = 57х - 9х = 5 + 3 - 1-2х = 7х = -3,5.Удачи)))...