36
58
42 + 24 + 18 = 84
That equation has no solution. There is no possible number that's equal to 18 more than itself.
3.33.3
24 + 18 + 20 + 22 = 84
2 x 3 x 3 = 18
The equation 5x plus 7 times 18 is know as a verbal sentence. This is a math problem.
60
18
-13
12