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Question

I take variable b, double it, and add four. I subtract 4b from this new expression, and divide the resulting difference by two. What is my final expression in simplest form?

Accepted Answer

We first obtain 2 b + 4. Next, we get 2b + 4 - 4b = -2b +4. Dividing this by two, we have -2b +42 = -22 b + 42. This yields -b+2, or 2 - b.