100
x + 4 = 25
What is 21
100
m + 3.7 = 5.4
What is 1.7
200
a + 13 = 20
What is 7
200
d - 7 = -9
What is -2
200
x - 66.09 = 102.8
What is 168.89
300
n - 8 = 14
What is 22
300
k - 83 =121
What is 204
400
x + 36 = 100
What is 64
400
x - 327 = 665
What is 992
400
28 = a/13
What is 364
400
c/0.2 = 5.5
What is 1.1
500
27 = c + 27
What is 0
500
a - 163 = 392
What is 555
500
80 = x/15
What is 1200
500
0.1 = y/0.1
What is 0.01