25-(7-2х)=5х 3*(2х-9)=5*(х-4) 5-3х=2х-8 7*(3-2х)=15*(1-х) - вопрос №57507382572532954532873215124014732 от ZayacZnaniy 02.11.2020 08:44

Question

Математика: 25-(7-2х)=5х 3*(2х-9)=5*(х-4) 5-3х=2х-8 7*(3-2х)=15*(1-х) 2х+40=х+14 7х-(3+2х)=х+9

ZayacZnaniy · Answer

25 - 7 + 2х = 5х2х - 5х = - 25 + 7- 3х = - 18   х = 66х - 27 = 5х - 206х - 5х = 27 - 20х = 75 -3х = 2х - 8-3х - 2х = - 8 -5- 5х = - 13х = 2,621 - 14х = 15 - 15х-14х + 15х = - 21 + 15х = - 62х + 40 = х + 142х - х = - 40 + 14х = - 267х - 3 - 2х = х + 97х - 2х - х = 9 + 34х = 12х = 3...