The sum of two numbers, x and y, is 12. The difference of x and two times y is 6. What are the values of x and y?

Question

AricaTuel368 AricaTuel368

07-07-2015
Mathematics

contestada

The sum of two numbers, x and y, is 12. The difference of x and two times y is 6. What are the values of x and y?

Respuesta :

Otras preguntas

what is a quote from the odyssey that shows odysseus' religion

What is the volume of a sphere when r = 9 ft

At sea level, water boils at 100 degrees celcius and methane boiled at -161 degrees celcius. Which of these substances has a stronger force of attraction betwe

what is a quote from the odyssey that shows odysseus' religion

What is the volume of a sphere when r = 9 ft

what are two possible uses of genetic engineering

At sea level, water boils at 100 degrees celcius and methane boiled at -161 degrees celcius. Which of these substances has a stronger force of attraction betwe

good job

naǫ naǫ · Answer 1 · 2015-07-07T13:04:09+02:00

naǫ naǫ

07-07-2015

[tex]x+y=12 \\ x-2y=6 \ \ \ \ \ \ \ \ \ |\times (-1) \\ \\ x+y=12 \\ \underline{-x+2y=-6} \\ y+2y=12-6 \\ 3y=6 \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ |\div 3 \\ y=2 \\ \\ x+y=12 \\ x+2=12 \ \ \ \ \ \ \ \ \ \ |-2 \\ x=10 \\ \\ \boxed{x=10, \ y=2}[/tex]

Answer Link