If you want to solve
for
, start by getting rid of the fraction.
Multiply both sides of the equation by
.

This will get rid of the fraction on the left and give you

Now this is a regular old equation without fractions. To get
by itself, you need to divide away
from both sides of the equation.
Can you finish it from there?
Adding zero would do nothing to it.
D is your answer.
Hope this helps!
STSN
Answer:
I have no idea sorry
Step-by-step explanation:
Answer:
1/4
Step-by-step explanation:
Find the area of the full rectangle:
=> 40 x 30 = 1200
Find the area of the uncut part:
=> 20 x 15
=> 300
Make these numbers as a fraction.
=> 300 / 1200
=> 3/12
=> 1/4
So, 1/4 part remains uncut.