There are no solutions to this problem,
Let's solve your equation step-by-step.
3
x
+
1
=
3
x
Step 1: Subtract 3x from both sides.
3
x
+
1
−
3
x
=
3
x
−
3
x
1
=
0
Step 2: Subtract 1 from both sides.
1
−
1
=
0
−
1
0
=
−
1
There are no solutions
Let's say you want to compute the probability

where

converges in distribution to

, and

follows a normal distribution. The normal approximation (without the continuity correction) basically involves choosing

such that its mean and variance are the same as those for

.
Example: If

is binomially distributed with

and

, then

has mean

and variance

. So you can approximate a probability in terms of

with a probability in terms of

:

where

follows the standard normal distribution.
Answer:
Um.. Im not sure about this one.. you're in college?
Step-by-step explanation: