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gayaneshka [121]
3 years ago
15

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?

Mathematics
1 answer:
creativ13 [48]3 years ago
8 0
The answer is the second choice.
x = 10, y = 2

The sum of two numbers x and y is 12.
x + y = 12

The difference of x and two times y is 6.
x - 2y = 6

From there I subtracted the bottom equation from the top equation, so it would look like:
(x + y) - (x - 2y) = (12) - (6)
x + y - x + 2y = 6
3y = 6
y = 2

from there you could plug in y as 2 in any equation above. I will use the top equation here.
x + y = 12
x + (2) = 12
x = 10
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Answer:

The answer is -1 1/2

Step-by-step explanation:

This problem doesn't have that much steps.

What you do is this.

Step 1: You have 2 7/8 and 4 3/8 now turn it into a improper faction it will look like this 23/8 -35/8

Step 2: Now minus 23/8 and 35/8 23-35= -12 and the 8's stay the same now it will look like this -12/8

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Step-by-step explanation:

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Answer:

<h3>12.56</h3>

Step-by-step explanation:

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