Question

How many solutions does the equation 3x − 7 = 4 + 6 + 4x have?

Two

None

Infinitely many

One

Answer 1

the first equation can be re-arranged
3x – 4y = 12
3x = 12 + 4y
4y = 3x - 12
y = 3/4 -12

Answer 2

so we have these two equations:
y = 3/4x -12
y = 4x – 3

Answer 3

so I can just solve the system instead :)
3x – 4y = 12 ,plug y=4x-3

3x - 4(4x-3) = 12
3x -16x +12 = 12
3x-16x = 0
-13 x = 0

x = 0.....

Answer 4

y = 4x – 3
y = -3

3x – 4y = 12
-4y = 12
y = -3

there seems to be a solution

Answer 5

http://openstudy.com/study#/updates/52459b40e4b0838bd449e2c1 c;

Answer 6

so theres two solutions?
@Elsa213

Answer 7

yes c:
x=0 and y=-3