Question

In a math problem I am solving for x and y. I solved for x and got x=2. Now I plug it back into the equation 7x-6y=4. but once I get to -6y = - 10 I don't know what I should write since i cant use a calculator

Answer 1

Okay. What you do is write it out yourself. Do it like this:\[\frac{ -10 }{ -6 } = \frac{ -1 \times 2 \times 5 }{ -1 \times 2 \times 3 } = \frac{ 5 }{ 3 }\]Do you understand what I did?

Answer 2

@arielle908?

Answer 3

what were the -1 for?
to make it positive?

Answer 4

Yeah. If you have a negative on both the top and the bottom mathematicians cancel them out. It's kind of because we're lazy - we don't like to write negatives everywhere if we can help it. :)

Answer 5

Ohh @OakTree Thank you c:

Answer 6

No you don't, @Loser66 - she doesn't want to solve the entire problem. And no problem, @arielle908. I was glad to help.

Answer 7

@Loser66 that was the only part that needed to be answered

Answer 8

@Loser66 But thank you for looking to help

Answer 9

Oh, no, that's fine. I was just telling you that the problem was solved. No need to get defensive - it's totally great that you're trying to help out more.

Answer 10

no worries