Question

2x - y = 3
y = -x
What’s the value of x?

Answer 1

X = 1 which means Y = -1

Explanation:

2x - y = 3

y = -x

Sub for y

2x + x = 3

Add the x's

3x = 3

Divided by 3

x = 1

Answer 2

These are simultaneous equations.They have to be solved like this:

2x-y=3 -y=3-2x 2x-3= -x

y= -x y= -(3-2x) 3x= 3

y=2x-3 x=1

Explanation:

The value of x equals to 1