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Combine Like Terms

100

2x + 3x + 4x

9x

200

4x +5y - x +3y

3x + 8y

300

2x - 8y + 10x + 12y - z

12x + 4y - z

400

2x² - 4x + 2x + 7x² - 5x³

9x² - 2x - 5x³

500

5x²y - 3xy² + 2xy - 4x²y + 6xy - 9

x²y - 3xy² + 8xy - 9

Distributive Property

100

4(x + 2)

4x + 8

200

3(x-4)

3x - 12

300

7(x - 4) + 2x

9x - 28

400

12(3x - 1) 

36x - 12

500

5(3x - 6) -14x - 4

x - 34

Evaluate equations

100

x + y + z if x = 2, y = 3, z = 15

20

200

2x - 5y if  x = 9 and y = 2

8

300

4x - 5y + z    if  x = 5, y=3 and z = 11

16

400

4(x - 6) + 2y if x = 9 and y = 3

18

500

3(x + 2y - z) + 4x - y  if x =4, y =15 and z = 6

73

Solve Equations

100

x - 4 = 6

x = 10

200

3x + 9 = 15

x = 2

300

x/ 18 = 3

x = 54

400

6(x - 9)= 12

x = 11

500

7(x - 2) = 9(x + 4)

x = -25

Proportions

100

x/6= 4/12

x=2

200

x/12= 3/9

x = 4

300

(x-3)/x= 9/10

x = 30

400

(p + 10)/(p - 7)= 8 / 9

-146

500

9/(k - 7)= 6/k

k = -14