Add or Subtract as Indicated $\frac { 2 } { 9 } + \frac { 2 } { 3 } - \frac { 1 } { 6 }$

question 143

Multiple Choice

Add or subtract as indicated. Write the answer in lowest terms.
- $\frac { 2 } { 9 } + \frac { 2 } { 3 } - \frac { 1 } { 6 }$

• A) \(\frac { 13 } { 18 }\)
• B) \(\frac { 19 } { 18 }\)
• C) \(\frac { 19 } { 9 }\)
• D) \(\frac { 13 } { 9 }\)

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Definitions:

Rock Metamorphism

The process by which the mineral composition and structure of a rock is changed by heat and pressure over time.

Subsurface Mining

Extraction of minerals and resources from below Earth's surface, involving techniques that may harm the environment through alteration of land structure and pollution.

Longwall Mining

A method of coal mining where a long wall of coal is mined in a single slice, typically used in underground mines.

Smelting

The process of extracting a metal from its ore by using heat and a chemical reducing agent to decompose the ore, removing impurities.