Question

What is the solution to the system of equations?

2x – y = 7

y = 2x + 3

Answer 1

if the second equation is equal to y then you can put it into the equation substituting for y:
2x - (2x + 3) = 7

Answer 2

make sense or need more help

Answer 3

need more help

Answer 4

okay so do you see that the parentheses are where the second equation goes?

Answer 5

there is a negative in front of the parentheses so the 2x + 3 turns into -2x - 3

Answer 6

okay

Answer 7

then you have 2x - 2x - 3 = 7

Answer 8

where do you go from here?

Answer 9

what do you do if you want to get x on one side of the equation and everything else on the other side?