How do you combine $(3-4d) + (d-1)$ ?

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Answer 1 · 2015-05-06T03:45:04

You first get rid of the brackets and then add together similar terms (with the same letters) according to their signs:
$3-4d+d-1=$
$3-1-4d+d=2-3d$

How do you combine (3-4d) + (d-1)(3-4d) + (d-1)?