Math Is Easy - Use Algebra To Solve Word Problem 4!If 15 is subtracted from three times a certain number,the result is 27. Find the number. (Note 1)If we let n represent the number to be found, thesentence If 15 is subtracted from three times a certain number, the resultis 27.can be translated into the following algebraic equation: 3n15 = 27Solve this equation3n15 = 27 + 15= + 15 Add 15 to bothsides3n + 0 =423n = 423n/3 = 42/3 Divideeach side by 3n = 14 Now we substitute the solutionfor n into the original equation to see if it works.3n 15 =273(14) 15 = 2742 15 =2727= 27We must also see if the solution works in theoriginal problem statement. If 15 is subtracted from three times a certain number,the result is 27.If 15 is subtracted from three times a certain number(3X 14), the result is 27.If 15 is subtracted from 42, the result is 27.4215 = 27We have just solved a first degree equation.(Note1)The source for the problem statement is:Intermediate AlgebraFor College Students by Jerome E. Kaufman CloseWindow