Which expressions are equivalent to 63 + 84?

1 answer

There are multiple expressions that are equivalent to 63 + 84. Some examples are:

1. 84 + 63 (commutative property of addition)
2. 147 (sum of the numbers)
3. 7 × 21 (distributive property of multiplication over addition)
4. 9² + 7² (squaring each number and adding the results)
5. 9 × 7 + 7 (factoring out a common factor)