a rational number is such that when you multiply it by 5/2 and add 2/3 to the product,you get_7/12 what is the number
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Answered by
23
Let the rational number = x
x is multiplued with 5/2 = 5x / 2
5x/2 + 2/3 = - 7/12
5x/2 = -7/12 - 2/3
5x/2 = ( -7 - 8 ) / 12
5x / 2 = -15 / 12
x = ( - 15 / 12 ) × ( 2 / 5 )
x = - 30 / 60
x = - 1 / 2
x is multiplued with 5/2 = 5x / 2
5x/2 + 2/3 = - 7/12
5x/2 = -7/12 - 2/3
5x/2 = ( -7 - 8 ) / 12
5x / 2 = -15 / 12
x = ( - 15 / 12 ) × ( 2 / 5 )
x = - 30 / 60
x = - 1 / 2
Answered by
4
latest remember be x
5x/2+2/3=7/12
(15x+4)/6=7/12
15x+4=7/12×6
15x+4=7/2
15x=7/2-4
15x= -1/2
x= -1/2×1/15
x= -1/30 (ans)
5x/2+2/3=7/12
(15x+4)/6=7/12
15x+4=7/12×6
15x+4=7/2
15x=7/2-4
15x= -1/2
x= -1/2×1/15
x= -1/30 (ans)
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