Question

[6.03] What is the value of the y variable in the solution to the following system of equations?
5x + 4y = 1
4x + 3y = -1

-7

7

9

-9

Answer 1

Get rid of the x by subtituion

Answer 2

so i multiply the first one by 4 and the bottom one by 5
right

Answer 3

Get Y alone for one of these. 4x+3y=-1. Do this by subtracting 4x on both sides which will leave you this, 3y=4x-1 then divide 3 by both sides again. y=4/3-1/3. Take that Y and replace it by the top. Do the distutive property for that one

Answer 4

ok 1 sec let me try it

Answer 5

I'm still confused

Answer 6

It's best to keep that fraction into decimals. If you end up with more decimals in the final result then your mostly likely doing something wrong. (Usually) Make sure to find x as the rest will be easier. Use thoses answer to try to find Y and you should get both answer

Answer 7

ok i'll try again

Answer 8

i'm getting stuck on one part every time

Answer 9

Here, since they give you the y parts, use all of those and work backwards. I am currently working on doing the forward method

Answer 10

The fractions are in my way, so I am working around it

Answer 11

Pretty sure it's 9

Answer 12

Reverse that and all of the x and y are the same to get that answer