Question

What is the value of x in the solution to this system of equation

y + 2x = -1
y= x+4
x
+
4

Answer 1

The value of x is 1 in the solution to this system of equation.

Explanation:

The system of equation are :

2x+y = -1 ---------(1)

x-y = 4 ---------(2)

Adding the equations (1) and (2),

2x+y = -1

x - y = 4

3x = 3

⇒ 3x = 3

⇒ x=3/3

⇒ x = 1