Verdict. The Microsoft Lumia 638 is an attractive budget friendly smartphone with the latest Windows OS and support for 4G LTE Cat4. It features a powerful Qualcomm Snapdragon processor but the lack of front camera is a big disappointment.
Steps. 1. Make sure that the denominators of every fraction that you're going to add or subtract are the same. 1  If the numbers are different, you can't add or subtract the fractions as-is.2  You can, however, perform the operations necessary to create fractions with like denominators, in which case you can add and subtract them.teps. 1. Make sure that the denominators of every fraction that you're going to add or subtract are the same. 1  If the numbers are different, you can't add or subtract the fractions as-is.
First, make the whole number into a fraction. Make the number the denominator; the numerator is always 1. So now it looks like this: 3/ â¦ 4 + 1/8 Now convert the fractions so the denominators are the same. 4 goes into 8 2 times so we multiply the numerator by 2 as well.s a general rule, proper fractions cannot turn into whole numbers and only in limited cases are improper fractions able to. To turn an improper fraction into a mixed number, â¦ divide the denominator into the numerator. The result is the whole number. Put the remainder over the original denominator.