Evaluating Equations with Variables
A local fair is opening soon, and you would like to buy tickets to it for you and friends. The
price for tickets is given by this following expression:
2 + 5x, where x is the number of tickets that you want to buy.
How
Balancing Equations
Think of equations as a scale where both sides must remain perfectly balanced no matter what. If
you remove something from one side of the scale, then something of equal value must be
removed from the other side. The same applies to ad
Equations with Zero or Infinite Solutions
So far, were addressed how to balance an equation in order to obtain a solution and resulting
form obtained when its balanced. But sometimes, we wont always get an equation in that form.
Sometimes, we might get so
Linear Equations and Word Problems
Often times in algebra (and beyond), you will be given a word problem where you are given no
equations whatsoever and expected to come up with the equations yourself and solve them. So
given the information in the proble
PEMDAS
Often times in Algebra I and beyond, you will encounter an equation that looks like this:
3*5+63/3
And you will be told to evaluate what number this is. Naturally, you will evaluate it going from
left to right, so your work will look like:
3*5+63/3
Inequalities
An inequality is an equation where instead of an equal sign, we have either a:
-Less than sign (<)
-Greater than sign (>)
-Less than or equal to sign (<)
-Greater than or equal to sign (>)
How do we interpret each sign?
- < means the left han
System of Equations
A system of equations is a set of two or more equations which share the same set of
variables/unknowns. When we are solving a system of equations, we are trying to find the
numerical values of the variables/unknowns in the system such