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Solve for unknown

100

2x + 3 = 9

x = 3

200

x/2 + 8 = 24

x = 32

300

3x + 12 = 24

x = 4

400

x/4 - 8 = 24

x = 128

500

5x + 100 = 200

x = 20

Distributive property (expanded form)

100

3(x - 2)

3x - 6

200

4(a - 7)

4a - 28

300

-7(2x + 5)

-14x - 35

400

-(c + 5)

-c - 5

500

-5(-2x + 6)

10x - 30

Factored form

100

3x - 6

3(x - 2)

200

12x + 36

12(x + 3)

300

4x - 18

2(2x - 9)

400

3c + 12

3(c + 4)

500

6x + 32 

2(3x + 16)

Area of triangle

100

b = 1, h = 2

1

200

b = 3, h =4 

6

300

b =12, h = 6

36

400

b = 9, h = 14

63

500

b = 15, h = 12

90

Area of trapezoid

100

b1 = 6, b2 = 6, h = 3

18

200

b1 = 6, b2 = 4, h = 8

48

300

b1 = 18, b2 = 6, h = 2

24

400

b1 = 2, b2 = 4, h = 12

36

500

b1 = 7, b2 = 9, h = 4

32