4 years ago

−3x + y = 4, −9x + 5y = −1 find x and y

1 answer:

3 0

Answer:

9x - 3y = -12

-9x +5y = -1

2y = -13

y = -13/2

-3x - 13/2 = 8/2

-3x = 21/2

-6x = 21

x = -21/6 = -7/2

(-7/2, -13/2)

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