285
12 x 21 = 252
12 + 21 = 33
54
3 times 33 equals 99.
.33 times 40 equals 13.2
3 times 33
33 x 3.14 = 103.62
11 x 3 = 33
16.5
It is 33 times 50 = 1650
3x = 33 Therefore, x = 33/3 x = 11
4 times a number added to 7 times the number equals 33
8.25 x 4
-3*11 or -11*3