Question 544185
{{{15-x=18}}} Start with the given equation.



{{{-x=18-15}}} Subtract {{{15}}} from both sides.



{{{-x=3}}} Combine like terms on the right side.



{{{x=(3)/(-1)}}} Divide both sides by {{{-1}}} to isolate {{{x}}}.



{{{x=-3}}} Reduce.



----------------------------------------------------------------------


Answer:


So the solution is {{{x=-3}}}