Ответ:
[tex]\left \{ {{x+3y=5} \atop {2x-y=3 |*3}} \right.[/tex]
[tex]\left \{ {{x+3y=5} \atop {6x-3y=9}} \right.[/tex]
7x=14
x=14:7
x=2
[tex]\left \{ {{x=2} \atop {2+3y=5}} \right.[/tex]
2+3y=5
3y=5-2
3y=3
y=3:3
y=1
[tex]\left \{ {{x=2} \atop {y=1}} \right.[/tex]
Ответ: ( 2 ; 1)
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Ответ:
[tex]\left \{ {{x+3y=5} \atop {2x-y=3 |*3}} \right.[/tex]
[tex]\left \{ {{x+3y=5} \atop {6x-3y=9}} \right.[/tex]
7x=14
x=14:7
x=2
[tex]\left \{ {{x=2} \atop {2+3y=5}} \right.[/tex]
2+3y=5
3y=5-2
3y=3
y=3:3
y=1
[tex]\left \{ {{x=2} \atop {y=1}} \right.[/tex]
Ответ: ( 2 ; 1)