Question

HELP! :P
Solve using elimination: -x-7y=14 and -4x-14y=28

Answer 1

multiply the first equation by -4 then add the result to the second eqution
this will wliminate the x term

Answer 2

-x-7y=14 * -4 becomes

4x + 28y = -56

now add this to

-4x - 14y = 28

Answer 3

note that 4x + (-4x) = 0

Answer 4

now add the y terms and the numbers to get an equation only in y terms

Answer 5

This is still going over my head a bit :/