dchirunga23
31.07.2019 •
Mathematics
3x=-5y 6x-7y=17 solve the equation
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Ответ:
6x - 7y = 17 (2)
From (1):
3x = -5y
x = -5/3 y sub into (2)
6 (-5/3 y) - 7y = 17
-10y - 7y = 17
-17y = 17
y = -1 Sub into (1)
3x = -5 (-1)
3x = 5
x = 5/3
Ans: x = 5/3, y = -1
Ответ: