------------------------------------------------------------ Define the two numbers ----------------------------------------------------------- Let the first number be x. Let the second number be y.
------------------------------------------------------------ Form equations and solve x and y ------------------------------------------------------------ x + 2y = 14 ------------------ (1) 2x + y = 31 ------------------ (2)
------------------------------------------------------------ Substitute y = -1 into (1) ------------------------------------------------------------ x + 2(-1) = 14 x -2 = 14 x = 14 + 2 x = 16
------------------------------------------------------------ Answer: x =16, y = -1 ------------------------------------------------------------
19x³ + (14x + 4x³)= You can assume that there is a 1 in front of the parentheses, so you can distribute the one to each term in the parentheses. 19x³ + 1(14x+4x³)= 19x³ + 14x + 4x³= Then combine like terms to get 23x³ + 14x. So 19x³ + 14x + 4x³= 23x³ + 14x
