Номер Решить по алгоритму {(2х-7у=20,@4х+у=10;)┤ {(2х-7(10-4х)=20,@у=10-4х ;)┤ {(2х-70+28х=20,@у=10-4х - id1251023420220612 от Gucci99 12.06.2022 21:54

Question

Математика: Номер Решить по алгоритму {(2х-7у=20,@4х+у=10;)┤ {(2х-7(10-4х)=20,@у=10-4х ;)┤ {(2х-70+28х=20,@у=10-4х ;)┤ {(2х+28х=20+70,@у=10-4х ;)┤ {(30х=90 │:30,@у=10-4х;)┤ {(х=3 ,@у=10-4•3;)┤ {(х=3 ,@у=10-12;)┤ {(х=3,@у=-2.)┤ Проверка: {2•3-7•(-2)=20,@4•3+(-2)=10;)┤ {(6+14=20,@12+(-2)=10;)┤ {(20=20,@10=10.)┤ ответ: (3;-2)

Gucci99 · Accepted Answer

ВотПошаговое объяснение:E)E)1/9 + 2.75 + 1/3 =E)1/9 + 2.75 + 1/3 =1.1/9 +2.75/1 00 + 1/3 =E)1/9 + 2.75 + 1/3 =1.1/9 +2.75/1 00 + 1/3 =.1/9 + 2 3/4 + 1/3 =E)1/9 + 2.75 + 1/3 =1.1/9 +2.75/1 00 + 1/3 =.1/9 + 2 3/4 + 1/3 =.4/36 + 2.27/36 + 12/36 =E)1/9 + 2.75 + 1/3 =1.1/9 +2.75/1 00 + 1/3 =.1/9 + 2 3/4 + 1/3 =.4/36 + 2.27/36 + 12/36 =3. 43/36 = 4. 7/36E)1/9 + 2.75 + 1/3 =1.1/9 +2.75/1 00 + 1/3 =.1/9 + 2 3/4 + 1/3 =.4/36 + 2.27/36 + 12/36 =3. 43/36 = 4. 7/36C)E)1/9 + 2.75 + 1/3 =1.1/9 +2.75/1 00 + 1/3...

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