New Library Books Ordered Classics 15% History 20% Reference 30% Other 25% Biographies 10% 9) . If 68 new history books were ordered, how many total books were ordered? Based on the total books ordered, how many of the books are biographies?

Follow these steps using the algebra tiles to solve the equation −5x + (−2) = −2x + 4. 1. add 5 positive x-tiles to both sides and create zero pairs. 2. add 4 negative unit tiles to both sides and create zero pairs. 3. divide the unit tiles evenly among the x-tiles. x =