100
x + 4 = 25
What is 21
100
m + 3.7 = 12.4
What is 8.7
200
a + 13 = 30
What is 17
200
x + 66.09 = 102.8
What is 36.71
300
n + 8 = 14
What is 22
300
m - 20 = 19
What is 39
400
x + 36 +30 = 100
What is 34
400
r - 75 = 1029
What is 1104
400
28 = a/13
What is 364
400
c/0.29 = 5.5
What is 1.595
500
27 = c + 27
What is 0
500
a + 163 = 392
What is 555
500
80 = x/15
What is 1200
500
0.12 = y/0.12
What is 0.0144