Addition
9x = 27
What is 3
The inverse of division
What is Multiplication
m + 3.7 = 5.4
What is 1.7
The inverse of addition
What is Subtraction
d - 7 = 9
What is 16
7x = 63
What is 9
x/4 = 14
What is 56
x - 66.09 = 102.8
What is 168.89
n + 8 = 14
What is 6
k - 83 =121
What is 204
5e = 400
What is 80
x/6 = 6
What is 36
5.6 = 0.8x
What is 7
x + 36 = 100
What is 64
x - 8/27 = 3/27
What is 11/27
11x = 275
What is 25
28 = a/13
What is 364
c/0.29 = 5.5
What is 1.595
7/13 = c + 4/13
What is 3/13
a - 163 = 392
What is 555
21y = 756
What is 36
80 = x/15
What is 1200