8c– 1–3(2c+1)
Combining like terms

Step-by-step explanation:

So we have the expression:

First, distribute the -3:

Distribute:

Combine like terms:

Simplify:

2c-4

After you combine the terms the answer is : 2c-4

0.02

step-by-step explanation:

time of 9 192 631 770 periods of the radiation corresponding to the transition between the 2 hyperfine levels of the ground state of the caesium 133 atom at 0 k (but other seconds are sometimes used in astronomy)