3 years ago

What is x + y = 12 if x = 2y

Mathematics

2 answers:

Crazy boy [7]3 years ago

5 0

I believe the answer is 4.

Ahat [919]3 years ago

4 0

Answer:

x=8

y =4

Step-by-step explanation:

x + y = 12 if x = 2y

Replace x with 2y in the first equation

2y+y = 12

Combine like terms

3y =12

Divide by 3

3y/3 =12/3

y = 4

Now we can find x

x=2y

x=2(4)

x = 8

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