rozwiąż układ równań:
-4x=10+15y 15x=21+4y
-4x=10+15y
15x= 21 +4y
-4x-15y=10 / x15
15x-4y=21 / x4
-60x -225y=150
60x-16y=84
--------------------------
-241y=234 / /(-241)
y= 234/241
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-4x=10+15y
15x= 21 +4y
-4x-15y=10 / x15
15x-4y=21 / x4
-60x -225y=150
60x-16y=84
--------------------------
-241y=234 / /(-241)
y= 234/241