Add or Subtract as Indicated $15 \frac { 2 } { 7 } - 7 \frac { 4 } { 7 }$

question 21

Multiple Choice

Add or subtract as indicated. Write the answer in lowest terms.
- $15 \frac { 2 } { 7 } - 7 \frac { 4 } { 7 }$

• A) \(7 \frac { 5 } { 7 }\)
• B) \(22 \frac { 5 } { 7 }\)
• C) \(7 \frac { 4 } { 7 }\)
• D) \(21 \frac { 5 } { 7 }\)

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Definitions:

Bond Angle

The angle formed between two bonds that originate from the same atom, crucial for determining the shape and geometry of molecules.

Three-Dimensional Model

A representation of an object or system in three dimensions, providing a realistic view of its structure and arrangement.

Methanol

A simple alcohol with the formula CH3OH, used as a solvent, antifreeze, fuel, and in the manufacture of formaldehyde.

Geometry

In the context of chemistry, it refers to the three-dimensional arrangement of atoms within a molecule, which significantly influences its reactivity and physical properties.