Question

Use the elimination method to solve this system...

Answer 1

Multiply both sides of the second equation by 2 to make the terms in g equal but of opposite signs. Then add the resulting equation to the first equation to eliminate the terms in g.
Can you do that?

Answer 2

Remove the braket by multiplying out
2(0.15g - 0.9f) = -5.55

Answer 3

Ok

Answer 4

I Got f = 5, g = -7

Answer 5

The first equation is 0.18f - 0.3g = 3
What do you get when you multiply both sides of the second equation by 2?

Answer 6

I get -12.6 but I think im doing something wrong

Answer 7

How did you get the answer f = 5 and g = -7 ?

Answer 8

I used a calculator but I dont know if I did something wrong

Answer 9

Can you describe the steps you took to solve the problem?

Answer 10

well I just entered the 1st equation on top of the 2nd and just calculated it and came up with 5, -7

Answer 11

So are you saying that your calculator can solve simultaneous first order equations with two variables?

Answer 12

yea

Answer 13

Well the answer f = 5, g = -7 is correct which is what would be expected from the use of such smart technology :)

Answer 14

Well cool then, thanks for checking

Answer 15

You're welcome :)