Use algebra tiles to find the difference. Let one white tile equal +1 and one black tile equal –1.

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And then what?

Use algebra tiles to find the difference. Let one white tile equal +1 and one black tile equal –1.

Use algebra tiles to find the difference. Let one white tile equal +1 and one black tile equal –1.

6 – (–9)

To find the difference using algebra tiles, you can represent positive values with white tiles and negative values with black tiles. In this case, let's assign a white tile to represent +1 and a black tile to represent -1.

Let's say we need to find the difference between two numbers, A and B. We can represent A with white tiles and B with black tiles.

For example, if A = 5 and B = 3, we would represent this using algebra tiles:

A = +1 + 1 + 1 + 1 + 1 (5 white tiles)
B = -1 - 1 - 1 (3 black tiles)

To find the difference, we would subtract B from A. This can be done by removing common tiles or combining like terms.

In our example, to find the difference between 5 and 3:

A - B = +1 + 1 + 1 + 1 + 1 - (-1 - 1 - 1)

Removing the parentheses and combining like terms, we have:

A - B = +1 + 1 + 1 + 1 + 1 + 1 + 1

Simplifying, we get:

A - B = +7

So the difference between 5 and 3 is 7.