## Elementary Algebra

The commutative property can be used to show that the two expressions are equivalent. The first expression $(-6a + 7b) + 11c$ can be rewritten without parentheses as $-6a + 7b + 11c$, which can then be rearranged to $7b + 11c - 6a$ Adding parentheses, this results in the second expression: $7b +(11c - 6a)$