If a/b=7/3 then find the value of 7a+9b/7a-9b
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Answer :
Given that,
a/b = 7/3
Now, multiplying the numerator by 7 and denominator by 9, we get
7a/9b = 49/27 ...(i)
Now, we use the formula
a/b = c/d
or, ( a + b )/( a - b ) = ( c + d )/( c - d )
From (i), we get
( 7a + 9b )/( 7a - 9b ) = ( 49 + 27 )/( 49 - 27 )
or, ( 7a + 9b )/( 7a - 9b ) = 76/22
or, ( 7a + 9b )/( 7a - 9b ) = 38/11
Hope it helps! (:
Given that,
a/b = 7/3
Now, multiplying the numerator by 7 and denominator by 9, we get
7a/9b = 49/27 ...(i)
Now, we use the formula
a/b = c/d
or, ( a + b )/( a - b ) = ( c + d )/( c - d )
From (i), we get
( 7a + 9b )/( 7a - 9b ) = ( 49 + 27 )/( 49 - 27 )
or, ( 7a + 9b )/( 7a - 9b ) = 76/22
or, ( 7a + 9b )/( 7a - 9b ) = 38/11
Hope it helps! (:
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