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lapo4ka [179]
3 years ago
11

5x-16y=272 y=(64-7x)/4

Mathematics
1 answer:
exis [7]3 years ago
4 0

Answer:

x=16, y=-12. (16, -12).

Step-by-step explanation:

5x-16y=272

y=(64-7x)/4

------------------

4y=64-7x

4y+7x=64

5x-16y=272

---------------------

4(4y+7x)=4(64)

5x-16y=272

-----------------

16y+28x=256

5x-16y=272

------------------

33x=528

x=528/33

x=16

5(16)-16y=272

80-16y=272

16y=80-272

16y=-192

y=-192/16

y=-12

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