Question

Solve these equations by using elimination method:
2x + 9y = 4
3x + 7y = –7

Answer 1

Do you know the meaning of the elimination method?

Answer 2

Yes.

Answer 3

OK, then where are you having trouble?

Answer 4

Well I multiplied the first equation by -3 and the second by 2 and I got
-6x - 27y = 4
6x + 14y = -14
- 13y = -10

Answer 5

i need help with those things too !

Answer 6

I don't think that this is going in the correct direction...Am I allowed to end up with a fraction?

Answer 7

You forgot to multiply through the right side of the first equation.

Answer 8

so how do you do it ?

Answer 9

fractions are perfectly fine. You can solve with them, or have them as answers. However, in this case you just made a small math error.

Answer 10

Ohhh. Ohkay. Thank you =)

Answer 11

np. I am working out the fractional form just to show you.

Answer 12

Ohkay! Thank you =)