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.
The denominator is the denominator of the fraction in the given mixed number. So 1 2/3 = 5/3. to bring 5/3 back to mixed number form, divide the numerator by the denominator. The whole number part is the quotient, the fraction part is the remainder / divisor. ok? oh! and make sure you express things in lowest terms.ating Newest Oldest. Best Answer: ANSWER: let's use what you gave: 1 2/3. to convert this into an improper fraction, multiply the denominator (3) by the whole number (1) then add the numerator (2) to the product. The sum is the numerator of your answer.