Question

What is the solution to this system of equations?
y = x +4
x+y= 2

Answer 1

y = 3

x = - 1

Explanation:

x + y + x + 4 = y + 2

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

x + x + 4 = 2

2x + 4 = 2

2x + 4 - 4 = 2 - 4

2x = - 2

2x ÷ 2 = - 2 ÷ 2

x = - 1

y = x + 4

y = - 1 + 4

y = 3

Answer 2

x = -1 y = 3

Explanation:

x + (x + 4) = 2

x + x + 4 = 2

2x = -2

x = -1

y = -1 + 4

y = 3