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So i need help with the question below.

So i need help with the question below.-example-1
User Amadi
by
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1 Answer

5 votes

Answer:

Option (1)

Explanation:

Option (1)


3(3)/(9)+7(6)/(11)=10(87)/(99)


3(3)/(9)+7(6)/(11)
=3+(3)/(9)+7+(6)/(11)


=(3+7)+((3)/(9)+(6)/(11))


=10+((3)/(9)* (11)/(11))+((6)/(11)* (9)/(9))


=10+((33)/(99)+(54)/(99))


=10+(87)/(99)


=10(87)/(99)

True.

Option (2)


2(3)/(8)+6(4)/(5)=8(12)/(40)


2(3)/(8)+6(4)/(5)=2+(3)/(8)+6+(4)/(5)


=(2+6)+((3)/(8)+(4)/(5))


=(8)+((3)/(8)* (5)/(5) +(4)/(5)* (8)/(8))


=8+((15)/(40)+(32)/(40))


=8+(47)/(40)


=8+(40)/(40)+(7)/(40)


=8+1+(7)/(40)


=9+(7)/(40)


=9(7)/(40)

False.

Option(3)


3(3)/(7)+4(2)/(3)=7(2)/(21)


3(3)/(7)+4(2)/(3)=(3+(3)/(7))+(4+(2)/(3))


=(3+4)+((3)/(7)+(2)/(3))


=7+((3)/(7)* (3)/(3) +(2)/(3)* (7)/(7))


=7+((9)/(21)+(14)/(21))


=7+((23)/(21))


=7+((21)/(21)+(2)/(21))


=8+(1)/(21)


=8(1)/(21)

False.

Option (4)


4(5)/(6)+5(5)/(7)=9(10)/(13)


4(5)/(6)+5(5)/(7)=4+(5)/(6)+5+(5)/(7)


=(4+5)+((5)/(6)+(5)/(7))


=9+((5)/(6)* (7)/(7)+(5)/(7)* (6)/(6))


=9+((35)/(42)+(30)/(42))


=9+(65)/(42)


=9+((42)/(42)+(23)/(42))


=9+1+(23)/(42)


=10(23)/(42)

False.

Therefore, Option (1) is the answer.

User Jimena
by
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