Question 519679
{{{5-x+10=20}}} Start with the given equation.



{{{-x+15=20}}} Combine like terms on the left side.



{{{-x=20-15}}} Subtract {{{15}}} from both sides.



{{{-x=5}}} Combine like terms on the right side.



{{{x=(5)/(-1)}}} Divide both sides by {{{-1}}} to isolate {{{x}}}.



{{{x=-5}}} Reduce.



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Answer:


So the solution is {{{x=-5}}} 



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Jim