Algebra 1
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Fractions
Addition and Subtraction
Find the LCM of the denominators and create a fraction with the LCM as the denominator. Divide each old denominator into the LCM and multiply the remainder by each numerator.
Multiplication
Multiply the numerators and then multiply the denominators.
Division
Express the fractions as a four-line fraction. Multiply the very bottom by the top and then multiply the two middle numbers.
