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100

10-10+x=15

X=15

100

y+8=12

Y=4

100

24 - x =17

X= 7

100

72/9= J

J= 8

100

42/7=F

F=6

200

21-2+x=35

X=16

200

15-x=10

X=5

200

9 . 9 = X

X = 81

200

48/8=L

L=6

200

6/2=g

G=3

300

65-23+x=52

X=10

300

6 . x =36

X=6

300

3 . 9 = z 

Z = 27

300

99/9=j

J= 11

300

87/4=T

T=21.75

400

120-35+x=100

X=15

400

Y + 14= 20

Y= 6

400

81/9=T

T= 9

400

A+B=X

X=c

400

768/9=P

P=85.3

500

567-26+x=542

X=1

500

4 + Y =7 

Y = 3

500

365/12 = M

M= 30

500

27/3=A

A= 9

500

987/4=K

K=246.75