Translate to and solve equations

1. SOLVING
EQUATIONS
Section 2.1 & 2.2 pages 75-89

2. What is an equation?
■ A mathematical sentence
■ Contains =, <, >, ≤, ≥
■ We will focus on = for now.Translates to equals or is.
■ Not an expression, expressions cannot be solved.
■ Can simplify or solve equations.

3. A number multiplied by negative 3 is 12.

4. Two plus the quotient of a number 8 is
the same as 16.

5. Twenty-seven times k is h squared
decreased by 9.

6. How to solve
■ Get the variable you are solving for alone
■ Isolate the variable of interest.

7. Undo the operations
■ We work backwards
■ Use the opposite operation to what you see
■ Follow order of operations backwards to undo

8. A few examples
10 = 6 + 𝑥

9. 𝑥
7
= 2

10. 2𝑥 = 60

11. Homework Practice
■ Page 78 #21-25
■ Page 86 #18-41