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17.07.2019 •
Mathematics
Solve this system of linear equations. separate the x- and y- values with a coma. -x=29-14y -9x=-19+14y
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Ответ:
We are given the two equations:
(1) -x=29-14y
(2) -9x=-19+14y
Multiply (1) by 9:
-9x = 261 – 126y
Subtract the two equations:
-9x = 261 – 126y
-
-9x=-19 + 14y
0 = 280 – 140y
140y = 280
y = 2
From (1):
-x = 29 – 14 (2)
x = -1
Answers:
x = -1
y = 2
Ответ: