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Solve the system of equations using the addition method.
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Topographic Profile
A cross-sectional view of the Earth's surface elevations along a line, showing any hills, valleys, and other features.
Colorado Rockies
A major mountain range in western North America, extending from New Mexico to British Columbia, known for its stunning landscapes and outdoor recreation.
Mississippi River
One of the longest rivers in the United States, flowing southward from northern Minnesota to the Gulf of Mexico.
East Coast
The easternmost boundary of a landmass or territory, which, in a country like the United States, refers to the coastline along the Atlantic Ocean.
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