Question 296450
Let x = a number
:
The ratio of 16 more than a number to 12 less than that number is 1 to 3. What is the number?
{{{(x+16)/(x-12)}}} = {{{1/3}}}
Cross multiply
3(x+16) = x - 12
3x + 48 = x - 12
3x - x = 12 - 48
2x = -36
x = {{{(-36)/2}}}
x = -18
:
:
Check solution
{{{(-18+16)/(-18+12)}}} = 
{{{(-2)/(-6)}}} = {{{1/3}}}