решите систему уравнений 2х+3у=5 5х+3у=-1. Created by ISAS1. matematika-ru

решите систему уравнений 2х+3у=5 5х+3у=-1...

August 2022 1 22 Report

решите систему уравнений
2х+3у=5
5х+3у=-1

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julyap $2x+3y=5 \\ 5x+3y=-1/*(-1) \\ \\ 2x+3y=5 \\ -5x-3y=1 \\ -3x=6 \\ x=-2 \\ \\ -4+3y=5 \\ 3y=5+4 \\ 3y=9 \\ y=3 \\ \\ \left \{ {{y=3} \atop {x=-2}} \right.$

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