To find r, first write out the equation:
Next, multiply both sides by 2:
Now, subtract both sides by 4:
Divide both sides by 3:
The answer to this problem is
r = 2. Hope this helps and have a phenomenal day!
If you have questions, feel free to ask
2/ 3 - (3 - 1) * 3 - 1 = -4
Simplify
= 2/-4
which is
= -2/4
Then simplify again
= -1/2
Y= -6 --> plug this -6 into the y of the 2nd equation
y= 4x+12 --> -6 = 4x+12 --> 4x = -18
x = -18/4 = -9/2 --> now this is the x solution coordinate, and we know that y must equal -6 from the 1st equation, so our solution point is:
(-9/2, -6)
Hope that helped!