x+2x=
3x
simplify 16/12
4/3
0.8+1.3
2.1
x2 = 64
8
3/4+6/8
3/2 (6/4)
simplify 3x(2x-4)
6x2-12x
12/6+4/18
40/18 or 2 4/18
simplify (2x-5)(x+6)
2x+7x-30
3 5/6-1 5/12
2 5/12
(6x2-4x) / 2x
3x-2x
3 12/15+7 1/3+2 1/5
13 1/3