7G REVIEW

EVALUATE

100

2y+4y=

use y=4

24

200

6x-2x= 

use x= -9

-36

300

2x+3y=

use x=2, y=3

13

400

2x+3y=

use x=2 y= -3

-5

500

7- 8(2x+2y) = 

use x=2, y=1

-41

DISTRIBUTE

100

5 (2x + y)

10x + 5y

200

-5 (- 8 - 6y) = 

40+30y

300

5 (-9 + 2x) =

-45+10x

400

1/2 (10x + 2y) = 

5x + y

500

1/3 (2/3x - 3/4y) = 

2/9x - 1/4y

FRACTIONS

100

1/4 + 1/2 = 

3/4

200

3/10 - 1/4 = 

1/20

300

3 1/4 - 7 2/3 = 

-4 5/12

400

3/7 - 27/28 - 3/14 = 

-  3/4

500

3/20 divided by -6/35 = 

-7/8

INTEGERS

100

8 - 9 =

-1

200

-42 / - 6 = 

7

300

(-2)(-4) + 4 = 

12

400

(-48/8) - (12/3) = 

-10

500

(-5)(2) + (-1/2)(-20) =

0