100
x + 4 = 25
What is 21
100
m + 2.4 = 3.7
What is 1.3
200
a + 13 = 20
What is 7
200
x - 5.4 = 102.8
What is 108.2
300
k - 83 =121
What is 204
400
x + 36 = 100
What is 64
400
x - 32 = 65
What is 97
400
28 = a/13
What is 364
400
c/3 = 5.5
What is 16.5
500
27 = c + 27
What is 0
500
a - 163 = 137
What is 300
500
80 = x/15
What is 1200
500
0.12 = y/2
What is 0.24