Rozwiąż układ równań.
x + y = 150
1/3x + 2/7y = 46 /*21
x + y = 150 /*(-6)
7x + 6y = 966
-6x - 6y = -900
------------------
x = 66
66 + y = 150
y = 150 - 66
y = 84
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x + y = 150
1/3x + 2/7y = 46 /*21
x + y = 150 /*(-6)
7x + 6y = 966
-6x - 6y = -900
7x + 6y = 966
------------------
x = 66
x + y = 150
66 + y = 150
y = 150 - 66
y = 84
x = 66
y = 84