5x by 3 -4 =2x by 5then the numerical value of (2x-7) is
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Solution :
Given linear equation in one
variable x is ,
5x/3 - 4 = 2x/5
=> ( 5x - 12 )/3 = 2x/5
=> 5( 5x - 12 ) = 6x
=> 25x - 60 = 6x
=> 25x - 6x = 60
=> 19x = 60
x = 60/19
Now ,
value of 2x - 7
= 2( 60/19 ) - 7
= 120/19 - 7
= ( 120 - 133 )/7
= -13/7
•••••
Given linear equation in one
variable x is ,
5x/3 - 4 = 2x/5
=> ( 5x - 12 )/3 = 2x/5
=> 5( 5x - 12 ) = 6x
=> 25x - 60 = 6x
=> 25x - 6x = 60
=> 19x = 60
x = 60/19
Now ,
value of 2x - 7
= 2( 60/19 ) - 7
= 120/19 - 7
= ( 120 - 133 )/7
= -13/7
•••••
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