How many solutions does this system have? y=-3x -9x-4y=21 Question How many solutions does this system have? y=-3x -9x-4y=21 in progress 0 Math Piper 5 hours 2021-11-25T19:16:01+00:00 2021-11-25T19:16:01+00:00 1 Answer 0 views 0

## Answers ( )

Step-by-step explanation:-9x-4(-3x)=21

-9x+12x=21

3x=21

x=7