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tia_tia [17]
3 years ago
12

Which expression represents the sum of (2x - 5y) and (x + y)?

Mathematics
1 answer:
Svetllana [295]3 years ago
7 0
A. 3x-4y would be the answer!
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⦁ If we add 5 to the denominator and subtract 5 from the numerator of a fraction, it becomes . If we subtract 3 from the numerat
natima [27]

the complete question is

If we add 5 to the denominator And subtract 5 from the numerator of a fraction ot reduces to 1/7. if we subtract 3 from the numerator and add 3 to its denominator ot reduces to 1/3. find the fraction.


Let

x/y-----------> the fraction


we know that

(x-5)/(y+5)=1/7------>7*(x-5)=(y+5)-----> y=7x-35-5----> y=7x-40----> equation 1

(x-3)/(y+3)=1/3----> 3*(x-3)=y+3----> y=3x-9-3----> y=3x-12------> equation 2


equate equation 1 and equation 2

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x/y=7/9


the answer is

the fraction is 7/9

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4 years ago
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