100
x + 4 = 25
What is 21
100
m + 3.7 = 2.4
What is -1.3
200
a + 13 = 20
What is 7
200
d - 7 = 19
What is 26
200
x - (-66.09) = 102.8
What is 36.71
300
k - 83 =121
What is 204
300
-5.6 = 0.8x
What is -7
400
x + 36 = 100
What is 64
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
-27 = c + 27
What is -56
500
a - (163) = -392
What is -229
500
-21y = -756
What is 36
500
-80 = x/15
What is -1200
500
0.12 = y/0.12
What is 0.0144