How do you solve system of equations #y = x+1# and #y = 2x -1#?
Substitute y= x+1 from the first equation into the second equation. it would become x+1= 2x-1. Now add 1 on both sides and also subtract x from both sides. It would become 2=x. that is x=2. Now in the 1st equation, plugin x=2, to get y= 2+1 =3.
subtract equation 1 from equation 2.
equation 2 - equation 1
in equation 1:
in equation 2: