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Select the correct answer.

What is the solution of the system x - 3y = -13 and 5x + 7y = 34?
A. X = (6)(5), y = 4
B. x = (7)(2), y = (9)(2)
C. x = (1(2), y = (9)(2)
D. X=-3, y = 7

2 Answers

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Final answer:

The solution to the system of equations is x = 0.5 and y = 4.5.

Step-by-step explanation:

To solve the system of equations x - 3y = -13 and 5x + 7y = 34, we can use the method of substitution.

First, solve the first equation for x in terms of y:

x = -13 + 3y

Substitute this expression for x into the second equation:

5(-13 + 3y) + 7y = 34

-65 + 15y + 7y = 34

22y = 99

y = 99/22

Simplify the fraction:

y = 4.5

Substitute this value of y back into the first equation to find x:

x - 3(4.5) = -13

x - 13.5 = -13

x = -13 + 13.5

x = 0.5

Therefore, the solution to the system of equations is x = 0.5 and y = 4.5.

User Sebastien Martin
by
5.2k points
5 votes

Answer:

The answer is C!

Step-by-step explanation:

x-3y=-13

5x+7y=34

x=-13+3y

-65+15y+7y=34

x=-13+3y

22y=99

y=9/2

x=-13+27/2

y=9/2

x=1/2

User Notalentgeek
by
5.7k points