Question

What is the solution to the system of equations?

2x – y = 7

y = 2x + 3

Answer 1

lol yup :)

Answer 2

Hey i forgot how to solve this so can u plz help :)

Answer 3

use substituion

Answer 4

\[2x – (2x+3) = 7\]

Answer 5

\[–1(2x+3) \] distribute

Answer 6

oh yeah now i remember thanks a lot

Answer 7

lol your welcome would u like to work it out? Or do u get it

Answer 8

No can we work it out plz ?

Answer 9

:)

Answer 10

This is what we get when we substitute y in to equation 1
2x–(2x+3)=7
We need to distribute
–1(2x+3)
what do you get once you distribute?

Answer 11

-2x+-3

Answer 12

good so we have....
\[2x–2x+3=7\]
Combine the like terms

Answer 13

3=7

Answer 14

no

Answer 15

well yes but 0x+3=7 (we need to keep 0)

Answer 16

wait there is no solution :/

Answer 17

oh ok that makes sense now
THANKS a lot i remember this stuff now :)

Answer 18

haha no probs :)