Solving Equations

Algebra 1

Review

Simplifying Expressions1.n – (-1)2.|-5| + v3.3 – (-a)4.19 – (-y)5.5r – (-r)

What is the inverse?

What does inverse mean?- 3+ 8x 4÷ 2-9÷ 7+ 6

More Inverses

Main Idea Details ExamplesEquations

Inverse Operations

Date: Topic:

Main Idea Details ExamplesSolving 1-Step Equations

Solve.

|-17| + m = 10

19 – (-y) = 25

6 + n = -12

t – 5 = -7

Solve.

|7| + m = 6

9 – (-y) = 5

6 – (-3) = n

3 – a = 0

-6 – (-y) = -7

Assignment:Pg. 135: 13-41 (odds) (start now…)

Pg. 142: 15 – 41 (odds)Must write out problem and show work.

Example: #13 (Page 135) Add 28.You will write: +28,

Example: #21: You will write: x = 4 – 7

Example: #23: You will write: t – 2 = 6

Solve.

|3|m = 9 |-4|n = 24

82

r 5 – t = 9

Solve.

|-17| + m = 10 6n = -12

124

r

t – 5 = -7

Solve

Main Idea Details ExamplesSolving 2-Step Equations

Solving 2-Step Equations

3x + 7 = 16 2x – 8 = 6

Solving 2-Step Equations

3x – 6 = 9 10v - 60 = 40

Solving 2-Step Equations

Assignment:Solving Equations Worksheet

(front due Friday)(back due Monday following break)

Solve.

8k + 7 – 3k = 11k + 19 3(c + 4) = -4(c + 11)

Solve.

3b = 4(b – 7) 5x + 3 = -17

Solving with Equations with Decimals

• 0.3b = 0.4b – 0.07 0.5x + 3 = -1.7

Solve Equations with Decimals

0.8k + 0.71 = k + 1.9 0.3c + 0.04 = 0.4c + 1

Solve Equations with Decimals

0.8k + 0.71 = k + 1.9 0.3c + 0.04 = 0.4c + 1

Solve Equations with Decimals

0.09k - 0.71 = 0.19 0.5c + 0.4 = 0.4c + 0.15

Solving with Equations with Decimals

• 0.3b = 0.4b – 0.07 0.5x + 3 = -1.7