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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

Respuesta :

I hope this helps you



a-b= 21


5a-2b=18



3a+2a-2b=18


3a+2. (a-b)= 18



3a+2.21=18


3a=18-42


3a= -24 a= -8


-8-b=21 b= 13

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