Two Step Equations

Everyone knows this!

100

Is X the only letter that can represent the answer?

No

200

What are all the operations?

Addition, subtraction, multiplication, and division.

300

What operation must I DO first in the equation 3x -5 = 25?

Add 5 to both side of the equation

400

What operation must I DO second in the equation 3x - 5 = 25

Divide by 3 on both sides.

500

What strategy may we use when adding or subtracting integers in an equation?

Write D.S.S, S.S.A, or KCC.

Regular Schmegular

100

3x + 5 = 14

x = 3

200

2x + 8 = 18

x = 5

300

7x + 3 = 24

x = 3

400

5x - 18 = -3

 x = 3

500

12x - 30 = -102

x = -6

I hate equations with negatives!

100

-4x + 7 = -9

x =4

200

- 2x - 12 = - 20

x = 4

300

-10x - 12 = -72

x = -6

400

-45 + 8x = -112

x = -7

500

-500 = 30 - 8x

x = 66.25 or 66 and 1/4

Oh, You BOLD!

100

4(7x + 1) = -220

x = -8

200

1 + 2k = -11 + 4k + k

k = 4

300

-14 = x/4 - 7

x = -28

400

(1/5)x + 35 = -15

x = -250

500

-24 = -x/5 - 9

x = 75