Evaluate the Arithmetic Expression $( 6 + 9 ) / 5 - 3 [ 15 - ( 17 - 2 \cdot 3 ) ]$

question 18

Short Answer

Evaluate the arithmetic expression. $( 6 + 9 ) / 5 - 3 [ 15 - ( 17 - 2 \cdot 3 ) ]$

---

Definitions:

Methyl Groups

Methyl groups are chemical groups consisting of one carbon atom bonded to three hydrogen atoms (-CH3), often influencing the function and properties of organic molecules.

Histones

Proteins around which DNA is tightly coiled in chromosomes, playing a role in gene regulation.

Homeotic Genes

Genes that control the development layout of an organism's body plan, determining the identity of body parts.