Elementary Geometry for College Students (5th Edition)

Published by Brooks Cole
ISBN 10: 1439047901
ISBN 13: 978-1-43904-790-3

Chapter 1 - Section 1.2 - Informal Geometry and Measurement - Exercises: 48

Answer

x=42$^{\circ}$ y=25$^{\circ}$

Work Step by Step

Given: x+y=67$^{\circ}$, x-y=17$^{\circ}$ Isolate variable: x=17$^{\circ}$+y Use Substitution: (17$^{\circ}$+y)+y=67$^{\circ}$ 2y=50$^{\circ}$ y=25$^{\circ}$ Substitute Y to find X: x=17$^{\circ}$+25$^{\circ}$ x=42$^{\circ}$
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