Level 1
Level 2
Level 3
100

r-21= -37

 -16

100

4p - 7 = 5

3

100

n-2=4 - 2n

2

200

r + (-1/2) = -3/4

 -1/4

200

6 = 4v +2

1

200

3-4q = 10q +10

-0.5

300

6x = -42

-7

300

(c/-4) -8=-42

136

300

5t - 9 = -3t +7

2

400

(5/2)a = -25

-10

400

(y/3) + 6=-45

-153

400

3(1 +d)-5 = 3d -2

all numbers

500

5 = r/2

10

500

(4d + 5)/7 = 7

 11

500

4(f -2) = 4f

 no solution