4x - 9 = 2x + 7 решите прошууу. Created by zirina39. matematika-ru

4x - 9 = 2x + 7 решите прошууу...

zirina39 @zirina39

July 2022 1 18 Report

4x - 9 = 2x + 7 решите прошууу

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vmaluga2011

Verified answer

4х-9=2х+7
4х-2х=7+9
2х=16
х=16:2
х=8

Проверка:
4*8-9=2*8+7
32-9=16+7
23=23

2 votes Thanks 0

zirina39 реши этот 144 - ( х : 11 + 21 ) * 2 = 14

vmaluga2011 144-(х:11+21)*2=14; 2(х:11+21)=144-14; 2(х:11+21)=130; х:11+21=130:2; х:11+21=65; х:11=65-21; х:11=44; х=44*11; х=484; Проверку сделал: все сошлось

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zirina39 August 2022 | 0 Ответы

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Answers & Comments

Verified answer

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