Rozwiąż układ równań metodą podstawiania.
+ma wyjsc x=6 y=-7
⅙x+3y=-20 |*6
⅓x-2y=16 |*3
x+18y=-120
x-6y=48
x=-120-18y
-120-18y-6y=48
-24y=168/:(-24)
y=-7
x=-120-18*(-7)
x=-120+126
x=6
licze na naj ;d
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⅙x+3y=-20 |*6
⅓x-2y=16 |*3
x+18y=-120
x-6y=48
x=-120-18y
-120-18y-6y=48
x=-120-18y
-24y=168/:(-24)
x=-120-18y
y=-7
x=-120-18*(-7)
y=-7
x=-120+126
y=-7
x=6
licze na naj ;d