WEBVTT

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Here is the problem: 18 plus 2 plus 5 minus 10 over 8.

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Exact arithmetic with fractions (results kept in lowest terms).

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Add the whole numbers.

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Add the whole numbers.

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Rewrite both fractions with the least common denominator. The LCD of 1 and 4 is 4.

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Subtract the numerators and keep the denominator.

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Final answer in lowest terms.

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So the answer is 95 over 4.

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Fractions are combined over a common denominator for addition and subtraction, multiplied straight across, and divided by multiplying by the reciprocal. The result is reduced by the greatest common factor.

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Decimal check: 95 over 4 approximately 23.75.

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As a mixed number: 23 3 over 4.