Yes they are equivilent because of the distributive property
which is
a(b+c)=ab+ac
or in this case
5(p+c)=5p+5c
if you don't believe it *cough* *cough* *Brainiac01* *cough* *cough*
then subsitute values
lets sayp=4 and c=3
5(4)+5(3)=5(4+3)
20+15=5(7)
35=35
tada
so the answer is yes
1/5, 0.35, 12/25, 0.5, 4/5
Simple...
you have: 9u=10u-6
Isolate the variable-->>u
9u=10u-6
9u=10u-6
-10u -10u
-1u=-6
Now simply divide-->>
u=6
Thus, your answer.
