Evaluate f g for x=-2(fg)(-2)= ??
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In order to subtract one fraction from another, we need to make the denominator the same in both fractions. The lowest common denominator is 8, because 4 is a factor of 8.
In order to make the denominators the same, multiply both the numerator and denominator of 13/4 by two. This keeps the value of the fraction the same, but will equate the denominators.
At this point, we can simply subtract 5/8 from 26/8.
21/8 cannot be simplified, so it is the answer.
In order to make the denominators the same, multiply both the numerator and denominator of 13/4 by two. This keeps the value of the fraction the same, but will equate the denominators.
At this point, we can simply subtract 5/8 from 26/8.
21/8 cannot be simplified, so it is the answer.
