Show:
Red
Orange
Yellow
Green
Blue
100

x + 3 = 12

x = 9

100

a + 4 = 7

a = 3

100

t - 3 = 5

t = 8

100

p - 4 = 2

p = 6

100

x - 6 = 7

x = 13

200

n / 3 = 8

n = 24

200

6w = 42

w = 7

200

8c = 32

c = 4

200

h / 6 = 9

h = 54

200

5y = 20 

y = 4

300

-9 + p = -6

p = 3

300

4z = -24

z = -6

300

-2x = 18

x = -9

300

k - 4 = -9

k = -5

300

u / -8 = 4

u = -32

400

6r + 3 = 33

r = 5

400

-3v + 6 = -9

v = 5

400

2q - 9 = 13

q = 11

400

4m - 6 = 12

m = 4.5

400

3x + 8 = 2 

x = -2

500

3 + 4m + 5m = 21

m = 2

500

2 - 8w - 3w = 46

w = -4

500

4(k - 3) = 20

k = 8

500

(u - 8) / 2 = -1

u = 6

500

-12(x + 5) = 144

x = -17