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Addition/Subtraction
Multiplication
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Decimals
Fractions
100

a - 10 = 13

a = 23

100

2h = 4

h = 2

100

m/2 = 6

m = 12

100

u + 3.7 = 2.4

u = -1.3

100

1/3 x = 5

x = 15

200

f + 15 = 25

f = 10

200

-3s = 6

s = -2

200

y/4 = -5

y = -20

200

e - 16.2 = -3.7

e = 12.5

200

-2/3 r = 8

r = -12

300

N + (-6) = -13

N = -7

300

-12y = -30 - 6

y = 3

300

-5 + 2 = w/8

w = -24

300

14.6 = t - 102.4

t = 117

300

15 = -5/8 v

v = -24

400

6 = d - (-17) + 16

d = -27

400

-48 = (14 + 2)z

z = -3

400

-9 = c/-7

c = 63

400

-5.68 = 0.8j

j = -7.1

400

-28 = -2/3 q

q = 42

500

-63 = g - 1/3 - 8/3

g = -60

500

-113 + (-13) = (7.2 + 1.8)b

b = -14

500

38/2 = z/-6

z = -114

500

-0.12 = y/-0.12

y = -0.0144

500

-3 1/3 = 2 1/2 h

h = -4/3