Question

When solving the system by substitution, what would you plug into the second equation for the letter x?

x+2y=4
2x+2y=6

x = 2

x = 4-2y

x = 4

x = 2y+4

Answer 1

This is my last question i need help please

Answer 2

from the first equation we get x = 4-2y (just by interchanging the sides)
we put this value of x in the second equation :)