2 years ago

8x - 3(5 + 9x what's the simplified algebraic expression p

Mathematics

1 answer:

Mashcka [7]2 years ago

4 0

=8x + (-3) (5) + (-3) (9x)

=8x + -15 + -27x

(8x + -27x) + (-15)

19x +-15

19x -15

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nikklg [1K]

Answer:

$\frac{-117}{10}$

Step-by-step explanation:

1) Change the mixed fractions into improper fractions:

$-3\frac{1}{5} + (-8\frac{1}{2} )\\= \frac{-16}{5} - \frac{17}{2}$

2) Multiply the first fraction by 2/2 and the second fraction by 5/5 in order to create common factors on the denominator (You can do this because you are essentially multiplying by one, for example 2/2 = 1):

$\frac{-16}{5} *\frac{2}{2} - \frac{-17}{2} * \frac{5}{5} \\ =\frac{-32}{10} - \frac{85}{10}$

3) Simplify the numerator(top part) while keeping the denominator(bottom part) the same:

$\frac{-32}{10} -\frac{85}{10} \\\\=\frac{-32 - 85}{10}\\ \\= \frac{-117}{10}$

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8x - 3(5 + 9x what's the simplified algebraic expression p​

8x - 3(5 + 9x what's the simplified algebraic expression p