Solve the system of equations using the substitution method. 
Definitions:
Agriculture
The science, art, and practice of cultivating plants and livestock.
Temperate Deciduous Forests
Biomes characterized by four seasons, including a distinct winter, and dominated by trees that lose their leaves annually.
Tropical Rain Forests
Biomes located around the Earth’s equator, characterized by high rainfall, diverse species of flora and fauna, and a constant warm temperature throughout the year.
Sunlight Penetrating
The process by which sunlight makes its way through the Earth's atmosphere to reach the surface, providing light and warmth essential for life.
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