Odpowiedź:
x+5y=7
3x-2y=4
x=7-5y
3(7-5y)-2y=4
21-15y-2y=4
-17y=-17/:(-17)
y=1
x=7-5•1
x=2
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Odpowiedź:
x+5y=7
3x-2y=4
x=7-5y
3(7-5y)-2y=4
x=7-5y
21-15y-2y=4
x=7-5y
-17y=-17/:(-17)
x=7-5y
y=1
x=7-5•1
y=1
x=2
y=1