SOLUTION: if the sum of a number and 4 is subtracted from 20 the result is 3 times the number. find the number

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Question 763797: if the sum of a number and 4 is subtracted from 20 the result is 3 times the number. find the number
Answer by MathLover1(20849) About Me  (Show Source):
You can put this solution on YOUR website!

let a number be x
the sum of a number and 4: x%2B4
is subtracted from 20: 20-%28x%2B4%29
the result is 3 times the number: 20-%28x%2B4%29=3x
20-%28x%2B4%29=3x....solve for x
20-x-4=3x
20-4=3x%2Bx
16=4x
16%2F4=x
highlight%284=x%29