Question

x+y=9
6x-y=19 elimination method

Answer 1

alternatively - just add the two equations and that will eliminate y

Answer 2

so x=4

Answer 3

correct :)

Answer 4

add the columns down and you are left with 7x=28 with leaves you with x=4 and now plug in x in any equation and solve for y

Answer 5

now use that in the first equation to solve for y

Answer 6

is it 25?

Answer 7

no - please show your steps so I can help spot where you may have made a mistake

Answer 8

im lost now

Answer 9

you got the correct answer for x ... x=4
but the wrong answer for y

Answer 10

from the first equation, you have:\[x+y=9\]now you know x=4, so what must y equal?

Answer 11

5

Answer 12

perfect! :)

Answer 13

ok got it thanks (:

Answer 14

yw :)