SOLUTION: Solve x - 3/4 - x/7 = 5

Algebra ->  Expressions-with-variables -> SOLUTION: Solve x - 3/4 - x/7 = 5      Log On


   

Question 141146: Solve
x - 3/4 - x/7 = 5
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
Solve
x - 3%2F4+-+x%2F7 = 5
Multiply equation by the common denominator, that would be 4*7 = 28
28(x) - 28*3%2F4 - 28*x%2F7 = 28(5)
Cancel the denominators:
28x - 7(3) - 4x = 140
:
28x - 4x - 21 = 140
:
24x = 140 + 21
:
24x = 161
x = 161%2F24
:
:
Check solution using decimals in calc; 161/24 ~ 6.71
6.71 - .75 - (6.71/7) = 5.00