Use r = 2 and r = 5 to determine if the two expressions are equivalent.

r + 4(2 + r) – 12 8 + 2r – 6

Complete the statements.

When r = 2, the first expression is
.
When r = 2, the second expression is 6.

When r = 5, the first expression is 21.

When r = 5, the second expression is
.
The expressions are not equivalent.