Odpowiedź :
[tex]\left \{ {{x - y = 3} \atop { 5x = y -1}} \right. \\\left \{ {{x - y = 3 /* (-1)} \atop {5x - y = -1}} \right. \\+ \left \{ {{-x +y = -3} \atop {5x - y = -1}} \right. \\\\---------- \\4x = -4\\x = -1\\\\-1 - y= 3\\-y = 4\\y = -4\\\left \{ {{y = -4} \atop {x = -1}} \right.[/tex]
Odpowiedź:
Te liczby to: -1 i -4
Szczegółowe wyjaśnienie:
a - b = 3 ⇒ b = a - 3
5 · a = b - 1
5a = a - 3 - 1
5a - a = -4
4a = - 4 /:4
a = -1
b = -1 - 3
b = -4