Question

Order pair of x=y+2 and 2y=x-1

Answer 1

x=y+2
2y=x-1
substitute x=y+2  into 2y=x-1

2y=x-1
2y=y+2 -1
2y - y = 1
y = 1

x=y+2
x=1+2
x=3

answer
x = 3 and y = 1