SOLUTION: If 1 less than a number is divided by 5 less than twice the number, the result is 21/39. What is the number?

Question 253771: If 1 less than a number is divided by 5 less than twice the number, the result is 21/39. What is the number?
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
If 1 less than a number is divided by 5 less than twice the number, the result is 21/39.
What is the number?
:
Let x = "a number"
:
Write an equation for what it says:
=
cross multiply, solve for x
39(x-1) = 21(2x-5)
:
39x - 39 = 42x - 105
:
-39 + 105 = 42x - 39x
:
66 = 3x
x =
x = 22
:
:
See if that works in the original statement:
=

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