Excerpt from A Key to the Elementary Algebra Let a: number of cents spent, and 2 a: number of cents left. Then 3 a: 45 cents, the Whole number, and a: 15 cents, the number spent. Let a: number of apples each has. Then 2 a: 56 apples, the Whole number, and a: 28 apples, the number each has. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.