How To Add, Subtract, Multiply And Divide Fractions Numbers?

These are simple arithmetic problems. The following steps will make you understand the problems.
Addition;
1/2 + 2/3 = (1x3)/6 + (2x2)/6 ---- taking lcm (6)
3/6 + 4/6 = 7/6
Subtraction;
1/2 - 2/3 = (1x3)/6 - (2x2)/6 ---- taking lcm 6
= 3/6 - 4/6 = -1/6

Multiplication;
1/2 x 2/3 = (1x2)/(2x3)
= 2/6
= 1/3

Division;
(1/2) / (2/3)
1/2 x 3/2
3/4