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Nesterboy [21]
3 years ago
6

X+y=27 x-y=1 What is x? What is y?

Mathematics
2 answers:
Zina [86]3 years ago
8 0

Answer:

x= 14 y= 13

Step-by-step explanation:

Use substitution or elimination

Art [367]3 years ago
7 0

Answer:

Y= 13 X= 14

Step-by-step explanation:

X-Y=1 (add Y on both sides to cancel it out)

X=1+Y (now we pug in this for the next equation)

X+Y=27 is now (1+Y)+Y=27

1+Y+Y=27 (Combine like terms)

1+2Y=27 (Subtract 1 on both sides to cancel it out)

2Y=26 (Divide by 2 on both sides to cancel it out)

Y=13 (Now we plug it into the another equation)

X + Y = 27 is now X + 13 = 27

X+13=27 (subtract 13 on both sides)

X=14

ALWAYS CHECK YOUR ANSWER BY PLUGGING IT IN!!!

X-Y=1 is 14-13=1 Which is correct!!

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2x = 4y + 8, x - 2y = 4
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Answer: x = 8, y = 2, coordinates (8,2)

Step-by-step explanation:

2x = 4y + 8 (divide by 2 to get value of x)

x = 2y + 4

(now substitute x into the second equation to find value of y)

2y + 4 - 2y = 4

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y - y = 2 - 2

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Now plug in value of "y" to get value of "x".

x - 2(2) = 4

x - 4 = 4

x = 8

Coordinates (8,2)

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