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GenaCL600 [577]
3 years ago
15

Help me with this 3 problems 1) -1/6 +(-3/6) 2)8/12-2/12 3)4/7-1/4

Mathematics
1 answer:
STatiana [176]3 years ago
8 0

Work is all listed below:

1) -1/6 - 3/6 = -4/6 = -2/3

2) 8/12 - 2/12 = 6/12 = 1/2

3) 4/7 - 1/4 = 16/28 - 7/28 = 9/28

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The product of two rational numbers is (-28/81). If one of them is (-2/3), the find the other.
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The other rational number is \dfrac{14}{27}.

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First rational number is \dfrac{-2}{3}

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According to question,

\dfrac{x}{y}\times \dfrac{-2}{3}=\dfrac{-28}{81}

Multiplying both sides by (-3/2) such that,

\dfrac{x}{y}\times \dfrac{-2}{3}\times \dfrac{-3}{2}=\dfrac{-28}{81}\times \dfrac{-3}{2}\\\\\dfrac{x}{y}=\dfrac{14}{27}

So, the other rational number is \dfrac{14}{27}.

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