3 years ago

What expressions are equivalent to (-7c+8d)0.6

Mathematics

1 answer:

Gwar [14]3 years ago

4 0

The new expression is 4.8d - 4.2c

Explanation:

Given:

Expression = (-7c + 8d) 0.6

On multiplication we get:

-4.2c + 4.8d

Therefore, the new expression is 4.8d - 4.2c

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2 years ago

Which of the following expressions are equivalent to \left(9\dfrac{7}{8} + 2\dfrac{4}{5}\right)-\dfrac{1}{2}(9 87 +2 54 )− 21

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$12\dfrac{7}{40}$

Step-by-step explanation:

The given expression is

$\left(9\dfrac{7}{8} + 2\dfrac{4}{5}\right)-\dfrac{1}{2}$

We need to find the simplified form of the given expression.

It can be rewritten as

$\left(9+\dfrac{7}{8} + 2+\dfrac{4}{5}\right)-\dfrac{1}{2}$

Combine integers and fractions separately.

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Taking LCM we get

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In can be written as

$11+\dfrac{40+7}{40}$

$11+1+\dfrac{7}{40}$

$12+\dfrac{7}{40}$

$12\dfrac{7}{40}$

Therefore, the expression $12\dfrac{7}{40}$ is equivalent to the given expression.

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