SOLUTION: 2/5(x)-6/7=1/4

Algebra ->  Equations -> SOLUTION: 2/5(x)-6/7=1/4      Log On


   

Question 162912: 2/5(x)-6/7=1/4
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
2/5(x)-6/7=1/4
2x/5=1/4+6/7
2x/5=(7*1+6*4)/28
2x/5=(7+24)/28
2x/5=31/28
28*2x=5*31
56x=155
x=155/56 Answer.
Proof:
2(155/56)/5-6/7=1/4
310/56*1/5=1/4+6/7
310/280=31/28
280*31=310*28
8680=8680