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The difference of two numbers, a and b, is 21. The difference of 5 times a and two times b is 18. What are the values of a and b? A. 4, 1 B. -19, 40 C. 20, 1 D. 30, 9 E. -8, -29

I WILL GIVE THE BRAINLIEST AND A LIKE TO THE RIGHT ANSWER.

Respuesta :

Answer:

Its E .  -8,-29

Step-by-step explanation:

we have a system of 2 equations:-

a - b = 21

5a - 2b = 18

Multiply the first equation by - 5:-

-5a + 5b = -105   Add this to the second equation:-

3b = -87

b = -29

So a  - (-29) = 21 ( using the  first equation)

a + 29 = 21

a = 21 - 29 = -8



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