There have to be at least 4 ducks recovered
Answer:
<h2>37</h2>
Step-by-step explanation:

p = 10
r = -4
t = 5
Substitute values into the given equation

Simplify

A. x+5 (divided by 4)
b. 2x+20 (multiplied by 2)
If you mean:
1/(3a^2)-1/a=1/(6a^2) we need a common denominator of 6a^2
2/(6a^2)-6a/(6a^2)=1/(6a^2), multiplying all terms by 6a^2 then:
2-6a=1 subtract 2 from both sides
-6a=-1 divide both sides by -6
a=1/6