Answer:
1/12 5/12 11/12
Step-by-step explanation:
Um it was pretty obvious but...
Your goal is to have x by itself
Send st to other side
rx= r+st
Divide by r so x stays alone
X=(r+st)/r
Which is also equal to
X=r/r+st/r
X= 1+st/r
You would multiply 4 by 72 then u multiply 4 * -6 then after that you would add 15