12 - у = 2у + 6 3х+3=27-5х-3у-8=2у+72х=18-х 7х+3=30-2х7-2х=3х-184х=24+х8х-8=20-6х9-4 - вопрос №17704909122633275382721873302723184248820 от Pavel1810 19.02.2020 09:23

Question

Математика: 12 - у = 2у + 6 3х+3=27-5х-3у-8=2у+72х=18-х 7х+3=30-2х7-2х=3х-184х=24+х8х-8=20-6х9-4 х = 3х -40 6х=28-х 9х-26=30-5х 7-3 х = 6х -56 11х= 36-х 9х+4=48-2х8-4х = 2х -16​

Pavel1810 · Answer

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12 - у = 2у + 6 3х+3=27-5х-3у-8=2у+72х=18-х 7х+3=30-2х7-2х=3х-184х=24+х8х-8=20-6х9-4 х = 3х -40 6х=28-х 9х-26=30-5х 7-3 х = 6х -56 11х= 36-х 9х+4=48-2х8-4х = 2х -16​

12 - у = 2у + 6 3х+3=27-5х
-3у-8=2у+7
2х=18-х
7х+3=30-2х
7-2х=3х-18
4х=24+х
8х-8=20-6х
9-4 х = 3х -40
6х=28-х
9х-26=30-5х
7-3 х = 6х -56
11х= 36-х
9х+4=48-2х
8-4х = 2х -16