Question

Solve the system by elimination
5x-21=3y
6x=4y+28

Answer 1

get them in to standard form of ax+by = c first

Answer 2

@helpme1.2 Can you show me how to solve this step by step its been awhile since ive done this?

Answer 3

hold on, brb

Answer 4

first start by putting them in to standard form
5x-3y=21
6x-4y=28

Answer 5

then try to eliminate one of the variable, in this case lets eliminate y first

Answer 6

5x-3y=21---> mult by 4
6x-4y=28---> mult by 3

20x-12y= 84
18x-12y = 84------then subtract the equation
-------------------
2x = 0 divide both by 2

x = 0

Answer 7

to find the Y value
plug in the x value in to one of the equations and solve for y

Answer 8

you with me @GMAN787 ?

Answer 9

Yes, sorry I was away for a few mins or so. @helpme1.2 \

Answer 10

do you think you can solve for y ?
you just need to plug the x value into one of the equation and solve

Answer 11

@helpme1.2 Could you help me with tha too?

Answer 12

ok
the x value as we know is 0
so you could choose any of the given equation you like
in this case lets pic 5x-3y=21

5(0)-3y = 21 ----> simplify it
0 - 3y =21
-3y = 21----> divide both sides by -3

y = -7