3x + 7y - 2z + 3 - 6x - 5z +15

**Step 1**: Using the associative property, rearrange the terms of the equation so that "like" terms are next to each other.

3x - 6x - 2z - 5z + 7y + 3 + 15

**Step 2:**Combine like terms.

-3x - 7z + 7y + 18

Simplify the following equation.

3x + 7y - 2z + 3 - 6x - 5z +15

**Step 1**: Using the associative property, rearrange the terms of the equation so that "like" terms are next to each other.

3x - 6x - 2z - 5z + 7y + 3 + 15

**Step 2:** Combine like terms.

-3x - 7z + 7y + 18

3x + 7y - 2z + 3 - 6x - 5z +15

3x - 6x - 2z - 5z + 7y + 3 + 15

-3x - 7z + 7y + 18

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