SOLUTION: 4 times unknown number deacreased by 5 is fifteen what is the unknown number

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Question 659118: 4 times unknown number deacreased by 5 is fifteen what is the unknown number
Answer by colliefan(242) About Me  (Show Source):
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Write it as an equation and solve for the unknown. Call the number x.
4x-5=15
4x-5+5=15+5
4x+0=20
4x=20
1/4*4x=20*1/4
1*x=5
x=5
Check to see if it is a solution to the problem.
4*5-5 is 15.