because the operation "add" is only defined for members of the same set
To add polynomials with dissimilar terms, you simply combine like terms by collecting the terms with the same variables and exponents. If a variable or exponent is not present in one polynomial, you leave it as it is. Then, you can add or subtract the coefficients of the like terms to arrive at your final answer.
dissimilar terms are terms that do not have the same variable or the variable do not contain the same number of exponents
Dissimilar terms on algebra are the expressions that doesn't have the same factors (variables) or powers of the factors. (exponent)Examples:4x + 5b - 2a(43)(52) - 4a + 7z
By finding their lowest common denominator
Make the fractions equivalent then subtract
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By finding the lowest common multiple of the denominators.
Adding similar fractions is easy, but adding dissimilar ones requires an additional step. Before you begin, you must know a few important key terms. First, the number on the top of a fraction is called the numerator, while the number on the bottom of a fraction is called the denominator. Similar fractions have the same denominator, also called a common denominator. To add dissimilar fractions (fractions with different denominators), you must first convert the fractions so that the denominators are the same.
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You can compare similar fractions by looking at their numerators. You can compare dissimilar fractions by converting them to similar fractions and looking at their numerators. You can convert a dissimilar fraction to a similar fraction by finding the least common denominator.
SIMILAR TERMS-algebraic terms which have the same literal factors and in which each letter has the same exponent in all of the terms.DISSIMILAR TERMS-algebraic terms which have only one or more of their literal factors are the same.Do you know that kemp jones garbo is the only boy who is hondsome in the world?
You have to convert them to equivalent similar fractions (fractions with the same denominator) first.