Решите уравнения 9х + (6 – 2х) = 15 2х – (5х + 4) = - 8 5 – 3(2х – 7) = -6х. Created by vladklepov1. algebra-ru

9x + (6 - 2х) = 159х + 6 - 2х = 157х = 9х = 9/7х = 1 2/7Ответ:2х - (5х + 4) = -82х - 5х - 4 = -8-3х = 4х = -4/3х = -1 1/3Ответ: 5 - 3(2х - 7) = -6х5 - 6х + 21 = -6х-6х + 6х = -5 + (-21)0х = 26

Решите уравнения 9х + (6 – 2х) = 15 2х – (5х + 4) = - 8 5 – 3(2х

vladklepov1 @vladklepov1

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Решите уравнения
9х + (6 – 2х) = 15
2х – (5х + 4) = - 8
5 – 3(2х – 7) = -6х

Answers & Comments

gogaladze 9x + (6 - 2х) = 15
9х + 6 - 2х = 15
7х = 9
х = 9/7
х = 1 2/7
Ответ:
$x = 1 \frac{2}{7}$
2х - (5х + 4) = -8
2х - 5х - 4 = -8
-3х = 4
х = -4/3
х = -1 1/3
Ответ:
$x = - 1 \frac{1}{3}$
5 - 3(2х - 7) = -6х
5 - 6х + 21 = -6х
-6х + 6х = -5 + (-21)
0х = 26

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