MATHEMATICS HIGH SCHOOL

What is the solution of the system? Use elimination. 5x – y = 20
2x + y = 15
A) (5, 5)
B) (7, 35)
C) (7, 0)
D) (5, -5)

Answers

Answer 1

Answer:

(5, 5) is the solution of the system 5x – y = 20 and 2x + y = 15

What is Equation?

Two or more expressions with an Equal sign is called as Equation.

The given equations are

5x – y = 20

2x + y = 15

______________

7x=35

Divide both sides by 7

x=5

Now plug in value 5(5)-y=20

25-y=20

Subtract 20 on both sides

25-20=y

5=y

Hence, (5, 5) is the solution of the system 5x – y = 20 and 2x + y = 15

To learn more on Equation:

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Answer 2

Answer: { 5 x - y = 20
2 x + y = 15
_____________
7 x = 35

x = 35 / 7

x = 5

For y :

2 x + y = 15

2*(5) + y = 15

10 + y = 15

y = 15 - 10

y = 5

Answer A ( 5,5 )

hope this helps!

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Answer:

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