Solving Equations Review

​Wednesday, March 16

• Inverse Operations

• Substitution

• Solving Equations

• ​Equations Word Problems

• Two-Step Equations

Algebra is fun!!!!!​

We use inverse operations to solve equations. We must isolate the variable by "doing the opposite". ​

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​Inverse Operations

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When we use substitution to ​find the value of an expression, we are given the value of the variable. We replace the variable with the number we have been given and solve the problem.

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​ Substitution​

To describe a pattern using an algebraic rule, choose variables to represent the term number and the number in the pattern.

​Here, we will use x for the term number and y for the number in the pattern. Since we multiply the term number by two to get the number in the pattern, the rule is 2x = y.

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​Solving Two-Step Equations

1. First, add or subtract both sides of the equation by the same number.

2. Second, multiply or divide both sides of the equation by the same number.

The test is Wednesday! Good luck!

Ms. Dunham​