Question

What should be added to twice the rational number - 4 /5 to get 5 / 10​

Answer 1

Answer:

x = 21 / 10 is the answer

Step-by-step explanation:

2 x (-4/5) + x = 5 / 10

5/10 = 1/2

- 8 / 5 + x = 1 / 2

x = 1 / 2 - (-8 / 5 )

x = 1 / 2 + 8 / 5

Lcm of 2 and 5 is 10

x = 21 / 10

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Answer 2

Answer:

21/10 is correct answer