100
x + 4 = 25
What is 21
100
m + 2.4 = 3.7
What is 1.3
200
a + 13 = 10
What is -3
200
d - 7 = 89
What is 96
200
66.09 - x = 29.38
What is 36.71
300
n + 8 = 24
What is 16
300
k - 83 =121
What is 204
400
529 + q = 1152
What is 623
400
x - 327 = 665
What is 992
400
28 = a/13
What is 364
400
c/0.29 = 5.5
What is 1.595
500
647 = m + 487
What is 160
500
a - 163 = 392
What is 555
500
80 = x/15
What is 1200
500
0.12 = y/0.12
What is 0.0144