Решите систему уравнений: 1) 7y-5x+18=0 5y+3x=20 2) 5y-6x+22=0 2y+x=15. Created by demidovdanila. algebra-ru

Решите систему уравнений: 1) 7y-5x+18=0 5y+3x=20 2) 5y-6x+22=0 2y+x=15...

August 2022 1 14 Report

Решите систему уравнений:
1) 7y-5x+18=0
5y+3x=20
2) 5y-6x+22=0
2y+x=15

Answers & Comments

SRT1905 1)
$\left \{ {{7y-5x+18=0} \atop {5y+3x=20}} \right. \\ \left \{ {{21y-15x=-54} \atop {25y+15x=100}} \right. \\ \left \{ {{21y-15x=-54} \atop {46y=46}} \right. \\ \left \{ {{21y-15x=-54} \atop {y=1}} \right. \\ \left \{ {{21-15x=-54} \atop {y=1}} \right. \\ \left \{ {{-15x=-75} \atop {y=1}} \right. \\ \left \{ {{x=5} \atop {y=1}} \right.$

2)
$\left \{ {{5y-6x+22=0} \atop {2y+x=15}} \right. \\ \left \{ {{5y-6x=-22} \atop {12y+6x=90}} \right. \\ \left \{ {{5y-6x=-22} \atop {17y=68}} \right. \\ \left \{ {{5y-6x=-22} \atop {y=4}} \right. \\ \left \{ {{20-6x=-22} \atop {y=4}} \right. \\ \left \{ {{-6x=-42} \atop {y=4}} \right. \\ \left \{ {{x=7} \atop {y=4}} \right.$

1 votes Thanks 0

Answers & Comments

r iz uchitelskoj eto oznachaet chto 1 uchitel govorit chto eto sdelal ne fedyushkbadf2b79dfb4fa5d39412663f54587d4 39589

razgadajte rebus pozhalujsta1600e6ebc5942deb83e90c5e57320bce 26939

1v seme levinyh na soderzhanie kvartiry uhodit 9 tys r na produkty pitaniya

razgadajte 2 rebusa

rasstavte koefficienty v shemah himicheskih reakcij metodom elektronnogo balansaee7944169c2e4c49629d8233989550ba 86063

pomogite pozhalujsta bychij cepen vse lentochnye chervi parazity v polovozrelom

zapishite uravnenie pryamoj esli izvestny koefficienty a b i c i postrojte etu pr

raspolozhite chisla v poryadke vozrastaniya 7 2 7 21 1 7 19

konstituciya rf opredelyaet polnomochiya prezidenta rf najdite v privedennom spiske

kak proishodili kontakty slavyan i vizantii kratko

рекомендуемые вопросы

Helpful Links

Helpful Social