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100

n + 11 = 23

n=12

100

100 - y = 95

y=5

100

x * 12 = 48

x=4

100

36/x = 6

x=6

100

128650/d = 12865

d=10

200

64 + x = 54

x= -10

200

239 - x = 10

x=229

200

y * 26 = 78

y=3

200

87/x = 29

x=3

200

96 + y = 82 

y= -14

300

4000 + y = 5687

y=1687

300

x - 73 = 127

x=200

300

k * 6 = 1.8

k=0.3

300

48/x = 0.8

x=60

300

64 - f = 12

f=52

400

w + 80 = -93

w= -173

400

89 - k = -23

k=112

400

x * 69 = 55.2

x=0.8

400

73/y = 18.25

y=4

400

92 * s = 184

s=2

500

k + 34650 = 2539

k= -32111

500

649 - k = -132

k=781

500

1240 * y = 917.6

y=0.74

500

48/k = 0.5

k=96

500

206/y = 25.75

y=8