Semester Exam Review Part 1

If 0 is the numerator (top number) of a fraction the result will always be 0

If 0 is the denominator (bottom number) of a fraction the result will always undefined

In order to add or subtract fraction, the denominator must be the same

Find the least common multiple for the denominator

Multiply the fractions to the LCM

Then add or subtract the numerator, while the denominator remains the same

PEMDAS

Parenthesis, Exponents, Multiplication, Division, Addition, Subtraction

Multiplication and Division are determined by the order of their appearance

Addition and Subtraction are determined by the order of their appearance

When multiplying a negative number in parenthesis with an exponent remember the negative gets multiplied

When multiplying a negative number NOT in parenthesis with an exponent remember the negative does NOT get multiplied. It is added at the end.

When given an Algebraic Expression and a value, substitute the value for the given variable

Follow PEMDAS when evaluating expression

Remember to combine like terms

Variables with variables

Numbers with numbers

Move the number to the right side of the equation

Moving a number can be done by canceling out a number

Add if negative

Subtract if positive

Move numbers to the right

Move Variables to the left

Divide by number in front of x

Fractions must have the same denominator

Multiply fractions to have the same denominator

If a term is not in the form of a fraction, assume it is over 1

Combine Terms

Solve the TOP

Focus on the variable to solve.

Isolate variable to one side, by moving terms without desired variable

Cancel everything out until variable is only remaining.