Algebra is the way in which the letters or even other general symbols are used to represent numbers and quantities. It quite benefits to human daily life because it could play a role of representing other quantities that people are not sure about. First time, It might seem to be complicated for some students as the way it looks, including me. But as you explore future more, you could easily discovers the way to express those problems. In the algebra expression, there are relationship between positive and negative, too. As part of humanity, we usually don’t know the exact quantities of the things. However, as in mathematics, you can replace a letter to represent the the quantity you want to figure it out.
Find the value of y when x=10
y = 9x/5
y = 90/5
y = 8