Solving Equations

One Step Equations (Addition & Subtraction)

100

x + 12 = 0

x= -12

200

5 + x = 8

x = 3

300

3 = -2 – x

x= -5

400

4 = -8 + x

x = 12

500

7 - x = 15

x = -8

One Step Equations (Multiplication & Division)

100

2x = 20

x = 10

200

15 = 5x

x = 3

300

-16 = x/2

x= -32

400

5x = -80

x= -16

500

1/3x = 7

x = 21

Two-Step Equations

100

6x – 13 = 11

x= 4

200

3x + 5 = 14

x= 3

300

(x/2) +10=-8

x= -36

400

(x/2)-4=10

x= 28

500

(x/3)+12=-3

x= -45

Math Vocab & Operations

100

What is the term for this in an equation:

X (or any other letter)

Variable

200

Anything inside this math operation must be solved first.

Parenthesis

( ) 

300

What does it mean when you see this in an equation:

3x

Correct answers include:

3 is the coefficient

3 times x

3 multiplied by x

400

What steps do you take to get x on its own: (not the answer!)

5x - 7 = 0

Add 7 (+7)

Divide by 5 (÷ 5)

500

New Lesson Alert!

What do we call an equation that looks like this:

4 = 4

True, Infinite, All Solutions

Challenge: Multi Step Equations

100

Solving Equations

4x + 3 = 7

x = 1

200

Solving Equations

8 - 3x = 8

x = 0

300

Solving Equations

5 - 2x = 12

x = -7/2

400

Solving Equations

4(6 + 5x) = 124

x = 5

500

Solving Equations

-108 = -8(x + 6) - 4

x = 7