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

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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