3 years ago

ما (1) When we add two fractions, do we need common denominator? Why or why not? Explain your answer by an example.

1 answer:

5 0

Answer:

Yes you need a common denominator because, We need the pieces of each fraction to be the same size to combine them together. ... These two fractions have the same denominator, so the equal parts that the whole has been split into are the same size.

Step-by-step explanation:

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marusya05 [52]

-11,0 I think im not sure

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3 years ago

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alukav5142 [94]

Answer:

Step-by-step explanation:

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3 years ago

The price of a fan is $15. This price is 27% lower than last week.

Goshia [24]

The price of fan was 20 Dollars 55 cents last week.

Step-by-step explanation:

Let,

The price last week = x

As the price is 27% lower than last week, therefore

(100%-27%) * Price last week = $15

73% * x = 15

Solving the percentage;

$\frac{73}{100}*x=15\\ Multiplying\ both\ sides\ by\ 100\\100*\frac{73x}{100} = 15*100\\73x=1500\\Dividing\ both\ sides\ by\ 73\\\frac{73x}{73} = \frac{1500}{73} \\x= 20.55$