SOLUTION: three-fourths of seven less than a number is forty-two. Find the number

Algebra ->  Percentage-and-ratio-word-problems -> SOLUTION: three-fourths of seven less than a number is forty-two. Find the number      Log On


   



Question 126561: three-fourths of seven less than a number is forty-two. Find the number
Answer by checkley71(8403) About Me  (Show Source):
You can put this solution on YOUR website!
3/4(x-7)=42
(3x-21)/4=42 now cross multiply.
3x-21=168
3x=168+21
3x=189
x=189/3
x=63 answer.
PROOF:
3/4(63-7)=42
3/4(56)=42
42=42