2(х-2)-3(х+5)=(х-2)-2(10-х)+1
2х-4-3х-15=х-2-20+2х+1
2х-3х-х-2х=-2-20+1+4+15
-4х=-2
х=1/2=0.5
проверка:
2(0.5-2)-3(0.5+5)=2*(-1.5)-3*5.5 = -3-16.5=-19.5
(0.5-2)-2(10-0.5)+1=-1.5-2*9.5+1=-1.5-19+1=-19.5
х найден верно
Copyright © 2024 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
2(х-2)-3(х+5)=(х-2)-2(10-х)+1
2х-4-3х-15=х-2-20+2х+1
2х-3х-х-2х=-2-20+1+4+15
-4х=-2
х=1/2=0.5
проверка:
2(0.5-2)-3(0.5+5)=2*(-1.5)-3*5.5 = -3-16.5=-19.5
(0.5-2)-2(10-0.5)+1=-1.5-2*9.5+1=-1.5-19+1=-19.5
х найден верно