In the elimination method, what would you do if you had the variable u want to cancel out, but they are the same sign.

for ex - this problem is just an example-

5x + 3y = 15

-12x + 3y = 20 can you just subtract the 3's or do you need to make one negative?

Question

Jakobe Copeland

9 November, 02:46

+5

Answers (2)

Know the Answer?

Nicolas Bryan · Answer 1

IN the example you have up, yes you would subtract the two 3ys but if they were doth negative, then you would add the two 3ys.

Sunny · Answer 2

You can pick one equation and multiply by - 1 to change the sign.

In the elimination method, what would you do if you had the variable u want to cancel out, but they are the same sign.for ex - this problem is just an example-5x + 3y = 15-12x + 3y = 20 can you just subtract the 3's or do you need to make one negative?