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olya-2409 [2.1K]
3 years ago
9

3. - 4x + y = 6 - 5x - y = 21

Mathematics
2 answers:
Bess [88]3 years ago
8 0

Step-by-step explanation:

-4x+y=6

-5x-y=21

y=6+4x

-5x-(6+4x)=21

-5x-6-4x=21

-5x-4x=21+6

-9x=27

-9x÷9=27÷9

x=3

y=6+4x

=6+4(3)

=18

zaharov [31]3 years ago
7 0

Answer:

(-3,-6)

Step-by-step explanation:

You need to solve for the system of equations.

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