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Tcecarenko [31]
3 years ago
12

Subtract and simplify​

Mathematics
2 answers:
katrin [286]3 years ago
8 0

Answer:

D

Step-by-step explanation:

Since the denominators of both fractions are common, then subtract the numerators leaving the common denominator, that is

\frac{4a+1-2a-7}{a^2-4} = \frac{2a-6}{a^2-4}

daser333 [38]3 years ago
6 0

Answer:

\boxed{\bold{\frac{2a-6}{a^2-4}}}

Explanation:

Apply Rule \bold{\frac{a}{c}\pm \frac{b}{c}=\frac{a\pm \:b}{c}}

= \bold{\frac{4a+1-\left(2a+7\right)}{a^2-4}}

Expand \bold{4a+1-\left(2a+7\right): \ 2a-6}

= \bold{\frac{2a-6}{a^2-4}}

Mordancy.

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