Mathematics: Find the sum of 3/4 and 9/10. Then multiply by -5/4. What is the product?

Find the sum of 3/4 and 9/10. Then multiply by -5/4.

Ответ:

uday50

02.09.2021

Mathematics

Sum:

$= \frac{3}{4} + \frac{9}{10} \\ \\ = \frac{30 + 36}{40} = \frac{66}{40} \\ \\ sum = \frac{33}{20}$

Product:

$= \frac{33}{20} \times - \frac{5}{4} \\ \\ = - \frac{33 \times 5}{20 \times 4} \\ \\ = - \frac{165}{80} \\ \\ { \boxed{ \boxed{product = -\frac{33}{16} = -2 \frac{1}{16} }}}$

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Ответ:

Serenitybella

03.12.2021

Mathematics

the 3rd on is correct

step-by-step explanation:

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Find the sum of 3/4 and 9/10. Then multiply by -5/4. What is the product?

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