When broken pieces of rock are carried away from the parent material, the process is known as A deposition B. erosion C. weathering D. landscaping or E transpiration

Weathering is the process where rock is dissolved, worn away or broken down into smaller and smaller pieces. There are mechanical, chemical and organic weathering processes.

and Erosion is the process of eroding or being eroded by wind, water, or other natural agents and the action of surface processes that removes soil, rock, or dissolved material from one location on the Earth's crust, and then transports it to another location.

metamorphism is the change of minerals or geologic texture (distinct arrangement of minerals) in pre-existing rocks (protoliths), without the protolith melting into liquid magma (a solid-state change). the change occurs primarily due to heat, pressure, and the introduction of chemically active fluids. i hoped i !

try using substitution:

x + y - 6 = x - y. (i'm not giving you the exact answer). since 0 = x - y, then sub 0 in the equation with x - y. combine your like terms, and then use inverse operations, and you'll have your answer.

: -)