3 years ago

5x - 2y = 10 x + 4y = 2

Mathematics

1 answer:

8090 [49]3 years ago

7 0

Answer:

- 40

Step-by-step explanation:

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Step-by-step explanation:

1). 10 = $\frac{1+7x}{7+x}$

10(7 + x) = 1 + 7x

70 + 10x = 7x + 1

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3). 0.8 = $\frac{x}{x+0.5}$

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4). 3.5 = $\frac{4+2x}{0.5-x}$

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