.Use the linear combination method to solve the system of equations. –3x + 8y = 16 3x + 4y = 8 What is the value of x?

Question

asked Mar 22, 2020 197k views

2 Answers

Jubei · Answer 1 · 2020-03-28T10:59:21+0000

Answer:

The value of x is 0

Explanation:

The given equations are

-3x+8y=16...(1)

3x+4y=8...(2)

We add the equattion (1) and equation (2) to obtain;

0x+12y=24

$\Rightarrow y=(24)/(12)$

$\Rightarrow y=2$

We put
y=2 into equation (2) to obtain;

3x+4(2)=8

$\Rightarrow 3x+8=8$

$\Rightarrow 3x=8-8$

Simplify

$\Rightarrow 3x=0$

Divide through by 3.

$\Rightarrow x=0$

The solution to the system is

(0,2)

The x-value is 0