+130514 2/3 - 1/6 remember....we have to get a common denominator ........and the common denominator of 2 and 6 is 6........
2 / 3 = 4 / 6 ......we multiplied the 3 in the denominator of the first fraction by 2 to get the 6 in the denominator of the second fraction.......we have to do the same to the numerator of the first fraction (2) in order to get the numerator of 4 of the second fraction ....so we have.....
4 / 6 - 1 / 6 = 3 / 6 = 1 /2
2/5 + 1/6 the common denominator is 30.....so we have
[2 / 5] * [6 / 6 ] + [ 1 / 6]* [ 5 / 5] =
12 / 30 + 5 / 30 = 17 / 30
2 1/4 + 1 3/4 this one is easy.....we really have.....
2 + 1 + 1/4 + 3/4 =
3 + 4/4 and 4/4 = 1 .so.....
3 + 1 =
4
