Question 89330
Solve: 
X/5X+10+x-3/x+2=7/5
:
Assume you mean, (a couple sets of brackets would help alot)
{{{(x/(5x+10)) + ((x-3)/(x+2))}}} = {{{7/5}}}
:
{{{(x/(5(x+2))) + ((x-3)/(x+2))}}} = {{{7/5}}}
:
5(x+2) would be the common denominator, if we mult equation by 5(x+2), we have:
x + 5(x-3) = 7(x+2)
:
x + 5x - 15 = 7x + 14
:
6x - 7x = 14 + 15
:
-1x = 29
:
x = -29
:
: 
Solve: 3/7=15/x
:
{{{3/7}}} = {{{15/x}}}
:
Cross multiply:
3x = 7*15
:
3x = 105
:
x = 105/3
:
x = 35