Unlike fractions have denominators that are unequal, and therefore cannot be added or subtracted. If two fractions need to be added or subtracted they must first be converted to like fractions.
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To carry out the mathematical operations like addition and subtraction we need to convert the unlike fractions to like fractions.
You first convert them to equivalent fractions with a common denominator. Or you convert them to decimal fractions.
unlike fractions
You can convert them to equivalent fractions with like denominators, then simply compare the numerators.You might also convert each fraction to a decimal (divide the numerator by the denominator); then you can also compare them.
unlike fractions
"Un" means "not." Unlike fractions are not alike.