SOLUTION: I have a question I am having problem with. This should be very simple I know. I am studying for a compass test and it has been a looonnnngggg time since I have had any math. The

Algebra ->  Numeric Fractions Calculators, Lesson and Practice -> SOLUTION: I have a question I am having problem with. This should be very simple I know. I am studying for a compass test and it has been a looonnnngggg time since I have had any math. The      Log On


   

Question 367875: I have a question I am having problem with. This should be very simple I know. I am studying for a compass test and it has been a looonnnngggg time since I have had any math. The problem is:
50-(12 2/3)-2(5 1/4)-2(6 1/2)=

I know how to do this problem, but am being told the answer is 13 5/6. I am having trouble in figuring this.
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Convert the mixed numbers to fractions,
12%2B2%2F3=36%2F3%2B2%2F3=38%2F3
5%2B1%2F4=20%2F4%2B1%2F4=21%2F4
6%2B1%2F2=12%2F2%2B1%2F2=13%2F2
Use a common denominator, 12.
%2838%2F3%29%284%2F4%29=152%2F12
%2821%2F4%29%283%2F3%29=63%2F12
%2813%2F2%29%286%2F6%29=78%2F12
Now substitute,


50-%2812%2B2%2F3%29-2%285%2B1%2F4%29-2%286%2B1%2F2%29=%28600-152-126-156%29%2F12%29
50-%2812%2B2%2F3%29-2%285%2B1%2F4%29-2%286%2B1%2F2%29=%28166%29%2F12%29
50-%2812%2B2%2F3%29-2%285%2B1%2F4%29-2%286%2B1%2F2%29=%2883%29%2F6%29
highlight%2850-%2812%2B2%2F3%29-2%285%2B1%2F4%29-2%286%2B1%2F2%29=13%2B5%2F6%29%29%29