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2 years ago

The variable x is twice the value of the variable y and the sum of x and y is 42 solve for x and y.

Mathematics

2 answers:

Lunna [17]2 years ago

8 0

Answer:

x=28 x=14

Step-by-step explanation:

x+y=42

2y=x

My method of doing this is a little unorthodox so this is probably going to make no sense... but here goes...

42/2=21

21*(2/3)=14

14*2=28

Oksi-84 [34.3K]2 years ago

4 0

Write two equations with the given information:

1) x = 2y ( x is twice the value of y)

2) x + y = 42

Replace x in the second equation with the value of x in the first equation:

2y + y = 42

Simplify:

3y = 42

Divide both sides by 3:

y = 42 / 3

y = 14

Now we have the value for Y, solve for x by replacing y with 14:

x = 2y

x = 2(14)

x = 28

X = 28 and y = 14

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2 years ago

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3 years ago

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tensa zangetsu [6.8K]

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Step-by-step explanation:

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2 years ago

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