P pierre New member Sep 20, 2009 #1 Twice the sum of a number and 4 is equal to three times the difference of the number and 9. What is the number? Let x be the unknown number. What is the unknown number?
Twice the sum of a number and 4 is equal to three times the difference of the number and 9. What is the number? Let x be the unknown number. What is the unknown number?