Question

Use the linear combination method to solve this system of equations. What is the value of x? Negative 2. 4 x minus 3. 6 y = 1. 2. 2. 4 x 1. 2 y = 1. 2. Negative 1 0 1 mc008-3. Jpg4. 8.

Answer 1

x=1 , y = -1

Explanation:

-2.4x-3.6y = 1.2

2.4x+1.2y = 1.2

Add the equations together

-2.4x-3.6y = 1.2

2.4x+1.2y = 1.2

---------------------------

-2.4 y = 2.4

Divide by -2.4

y = -1

Now find x

2.4x +1.2y = 1.2

2.4x +1.2(-1) = 1.2

2.4x -1.2 = 1.2

Add 1.2 to each side

2.4x -1.2+1.2 = 1.2+1.2

2.4x = 2.4

Divide by 2.4

x = 1