Question

3x-y=4
x+y=9
Solve the following linear equation.

Answer 1

x = 3.25

y = 5.75

Explanation:

3x - y = 4

x + y = 9

Time the second equation by -3

3x - y = 4

-3x - 3y = -27

-4y = -23

y = 5.75

Now put 5.75 for y and solve for x

3x - 5.75 = 4

3x = 9.75

x = 3.25

Let's check

3(3.25) - 5.75 = 4

9.75 - 5.75 = 4

4 = 4

So, x = 3.25 and y = 5.75 is the correct answer.

Answer 2

(
`(13)/(4)`,
`(22)/(4)`) or (
`3(1)/(4)`,
`5(1)/(2)`) Same answers just in different forms.

Explanation:

Helping in the name of Jesus.