Jet found 40 dirty trash bins . She cleaned 15 of the bins, then found another 12 that were dirty. She wants to clean them all. How many trash bins does Jet still need to clean ?

Type the correct answer in the box. consider the system of linear equations below. rewrite one of the two equations above in the form ax + by = c, where a, b, and c are constants, so that the sum of the new equation and the unchanged equation from the original system results in an equation in one variable.