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which of the following pairs consits of equivalent rational numbers ? (1)-9 /15 and -3 /5 (2)-2 7 and -9 / 32Add a comment
- By 555 |
- Category: algebra |
- Grade level: 8th grade (14)
- Jun/21/2009 |
- Answers to this question: 2
|
Answer by: sherinjoset
convert the denominators one and the same then compare
-3 = -3 x 3 = -9
---- --------- ------
5 5 x 3 15
hence -3/ 5 and -9/15 are equalent
-2 = -2 x 32 = -64
---- ---------- --------
7 7 x 32 224
-9 = -9 x 7 = -63
----- -------- --------
32 32 x 7 224
hence -2/7 < -9/32 , not equal
-3 = -3 x 3 = -9
---- --------- ------
5 5 x 3 15
hence -3/ 5 and -9/15 are equalent
-2 = -2 x 32 = -64
---- ---------- --------
7 7 x 32 224
-9 = -9 x 7 = -63
----- -------- --------
32 32 x 7 224
hence -2/7 < -9/32 , not equal
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- Jun/21/2009 |
- Answers by sherinjoset: 23 |
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Answer by: shij80
First Answer
Ans = -9/15 and -3/5
if we multiply -3/5 and 3/3
-3/5* 3/3 =-9/15 that means they are equal fractions
or if we simplify
-9/15 = -3*3/5*3
cancellining 3 we will get -3/5 ,here also these fractions are equal
in the other case we wont get equal fractions
-2/7 not equal to -9/32
so they r not equivalent fractions
if we multiply -3/5 and 3/3
-3/5* 3/3 =-9/15 that means they are equal fractions
or if we simplify
-9/15 = -3*3/5*3
cancellining 3 we will get -3/5 ,here also these fractions are equal
in the other case we wont get equal fractions
-2/7 not equal to -9/32
so they r not equivalent fractions
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- Jun/21/2009 |
- Answers by shij80: 16 |
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I tutor algebra, other - mathematics.
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