8/25+5/7-1/2

so well solve it like this ! alan has done it that way but i find it easier doing it directly !so its like this 

8/25 + 5/7 - 1/2

=112 + 250 -175/350

=362 - 175/350

=187/350 = 0.5342857142857143

so thats it but alan i dont understand that why did u plus the three nos when the question was like this  8/25 + 5/7 - 1/2  !

Express each term with a common denominator.  Easiest way to find a common denominator is to multiply all three denominators together.

\frac{8}{25}*\frac{25*7*2}{25*7*2}+\frac{5}{7}*\frac{25*7*2}{25*7*2}+\frac{1}{2}*\frac{25*7*2}{25*7*2} $$\\\\ $$ \frac{8*7*2}{25*7*2}+\frac{5*25*2}{25*7*2}+\frac{1*25*7}{25*7*2} $$\\\\ $$ \frac{8*7*2+5*25*2+1*25*7}{25*7*2} $$\\\\ $$ \frac{112+250+175}{350} $$\\\\ $$ \frac{537}{350}$$ 

$${\frac{{\mathtt{537}}}{{\mathtt{350}}}} = {\mathtt{1.534\: \!285\: \!714\: \!285\: \!714\: \!3}}$$

or  

  $$1\frac{187}{350}$$

Edit:  I put a "+" instead of a "-" for the last term, so the final answer is incorrect!  See rosala's post for the correct answer. 

I just lost sight of the fact that the last term was negative while concentrating on all the LaTeX stuff!  Thanks for correcting this rosala.

ur welcome Alan!and its ok to make these kind of mistakes , it happens with everyone ! nothing too serius !but for a tip while typing on LaTex u shuld move it at the corner of the wrting center so the ques and other things are easily visible!

Thank you for the tip rosala - I will do that in future.

u r welcome Alan!