Helpful Videos

Below are some videos that might help you if you are having difficulties recalling certain lessons.  Remember that your text book is also a great resource.

Order of Operations
https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-variables-expressions/cc-7th-order-of-operations/v/order-of-operations

https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-variables-expressions/cc-7th-order-of-operations/v/more-complicated-order-of-operations-example

Adding and Subtracting Fractions
https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-fractions-decimals/cc-7th-add-sub-rational-numbers/v/adding-and-subtracting-three-fractions

Adding and Subtracting Negative Numbers
https://www.khanacademy.org/math/pre-algebra/negatives-absolute-value-pre-alg/add-subtract-negatives-pre-alg/v/adding-and-subtracting-negative-number-examples

Simultaneous Linear Equations (Graphing Method)
https://www.khanacademy.org/math/algebra/systems-of-eq-and-ineq/fast-systems-of-equations/v/solving-linear-systems-by-graphing

Linear Equations
https://www.khanacademy.org/math/algebra/solving-linear-equations-and-inequalities/old-school-equations/v/algebra-linear-equations-1

https://www.khanacademy.org/math/algebra/solving-linear-equations-and-inequalities/old-school-equations/v/algebra-linear-equations-2