Question

Ayúdenme porfa urgente

Answer 1

x + y = 1

y = - x + 1

- 2x + y = 7

y = 2x + 7

2x - y = 8

- y = -2x + 8 (-)

y = 2x - 8

7x - y = 10

- y = - 7x + 10 (-)

y = 7x - 10

7x - 8y = 0

- 8y = -7x

y = -7x/-8

-0.4x + 0.5y = 3

0.5y = 0.4x + 3

y = 0.4x + 3/0.5

Answer 2

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Explicación paso a paso:

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