Answer
$11r^3+11$
Work Step by Step
We are given the expression:
$(5r^3+8)+(6r^3+3)$.
Use the distributive property and remove parentheses. We have:
$5r^3+8+6r^3+3$.
Combine the terms having the same degree using the commutative property:
$(5r^3+6r^3)+(8+3)$.
Simplify by adding the terms of the same degree:
$11r^3+11$
which is final answer.
