Question

Jessica rewrites Expression 1 as d + d + d + 5 + 5 + 5.
Why might she have done this?

Answer 1

she wrote it to make it simpler to add.

Step by step:

A triangle has 3 sides. It's given sides are d+5. All sides are d+5 because it is an equilateral triangle.

The answer to the question you were looking for is: SHE COMBINED THE LIKE TERMS SO IT WOULD BE EASY TO ADD THEM.

Hope it helps....

Answer 2

Jessica may have done this to help adding her like terms. Because expression is just adding the (d+5) three times then you would just take them out of the parentheses and can set them up as how Jessica rewrote it.