McD Basic Equation Review

One-Step Eq.

100

x - 23 = 17

x = 40

200

- 4x = 7

x = - 7/4

x= - 1.75

300

x/5  =  - 3.2

x = - 16

400

2/3 x  = 8

x = 12

500

4/5 x  = - 16

x = - 20

Two Step Eq

100

2x - 7 = 10

x = 17/2

x = 3.5

200

5x + 13 = 99

x = 17.2

x = 86/5

300

- 2x + 3 = - 11

x = 7

400

- 4x - 32 = 1

x = - 33/4

x = - 8.25

500

-10x + 30 = 40

x = - 1

Scrambled two step

100

7 + 3x = 22

x = 5

200

18 = 5 - 2x

x = - 6.5

x = - 13/2

300

20 = 10x + 35

x = - 1.5

x = - 3/2

400

- 17 = 17 - 4x

x = 8.5

x = 17/2

500

- 121 = - 55 - 2x

x = 33

Multi step

100

2(x + 5) = 24

x = 7

200

- 40 = 3(x + 4)

x = - 17.333

x = - 52/3

300

- 2( x - 4 ) =  20

x = - 6

400

- 5( 2x - 3 ) =  45

x = - 3

500

2.5( x + 6) = - 11

x = - 10.4

x = - 52/5

Random Review

100

x / 7  = 3 / 4 

x = 21/4

x = 5.25

200

How do we find the Constant of Proportionality, k?

k =  y / x

300

Simplfy

5(2x - 7) + 13x

23x - 35

400

Factor

4x - 20

4( x - 5 )

500

Evaluate:

3/4( 1/2 + 5/4) 

21/16

1.3125