Solve 3x = 9
x = 3
Solve x + 11 = 30
x = 19
Solve 12x = 84
x = 7
Solve x -11.2 = 14.9
x = 26.1
Subtract: 5 1/12 - 2 2/3
2 5/12
Solve 3.2x = 6.72
x = 2.1