ELEMENTARY ALGEBRA FOR Schools and Academies. BY JOSEPH W. WILSON, A.M., PROFESSOR OF GEOMETRY IN THE CENTRAL HIGH SCHOOL OF PHILADELPHIA. PHILADELPHIA: ELDREDGE & BROTHER, No. 17 North Seventh Street. Educ T 198, 73,879 HARVARD COLIFGE LIBRARY K. Péters, Jr. Entered, according to Act of Congress, in the year 1871, by ELDREDGE & BROTHER, in the Office of the Librarian of Congress at Washington. PREFACE. T THE attention of Teachers is requested to the following points, in which the Author has endeavored to make this book a useful one: Clearness. The great aim throughout has been to make everything as plain as the nature of the subject would permit. Every principle has been explained, and unnecessary verbiage avoided. A very Gradual Advance. Complex subjects have been subdivided as far as possible into their elements, so that the learner may have to take but one step at a time. A Practical Character. There is a continual review and repetition of whatever has been learned. Much more attention than usual has been given to Fractions, as a thorough drill on them is believed to be essential to a full comprehension of Algebraic operations, and a ready facility in performing them. The examples are very numerous, and are all original, so that this book may be used in connection with others, without fear of any other than accidental repetition. An Analytical Method. This is essentially the same |