Question

A system of equations is shown below:

Equation A: 3c = d − 8
Equation B: c = 4d + 8

Which of the following steps should be performed to eliminate variable d first?
Multiply equation A by −4.
Multiply equation B by 3.
Multiply equation A by 3.
Multiply equation B by 4.

Answer 1

@Kkutie7

Answer 2

Ok give me a second I haven't dont eliminations in a long time

Answer 3

Okay

Answer 4

okay all caught up. the idea is to add the equations together. in order to eliminate d you have to take in its coefficient 4

Answer 5

easy math now because you know -4+4=0 0*d=0 getting rid of d

Answer 6

Im confused

Answer 7

One option is ....you can check every option by doing what they says.

Answer 8

You will get your answer.

Answer 9

So is it A?

Answer 10

Correct

Answer 11

yes, let me explain better?

Answer 12

Yes please

Answer 13

ok I'll draw in out just remember we want to get rid of d

Answer 14

ok here is your problem you want to add the two equations together to get rid of d