Do the first step of solving this equation by substitution, by creating a single equation (do not use spaces)

Answer:
x= 1 y= 3
Step-by-step explanation:
y= 2x+1
y= 4x-1
4x-1=2x +1
4x-2x= 1+1
2x=2
x=2/2
x=1. replace x=1 in any of the equation to find y
y= 2(1)+1
y= 2+1
y=3