How to solve 21 = m +14 1/6

All per-unit concepts rely on ratios,meaning,to provide a type of measurement

According to modern science, earth is about 4.5 billion years old and written human history extends back about 10,000 years. suppose the entire history of earth is represented with a 10-meter-long timeline, with the birth of earth on one end and today at the other end.

Inez has a phone card. the graph shows the number of minutes that remain on her phone card a certain number of days.