Answer
$$-8x+8y.$$
Work Step by Step
We simplify by distributing $-2$ and then combine similar terms as follows:
$$(2x - 5y) + (3y - 4x) -2(3x - 5y)=-2x-2y-6x+10y\\
=-8x+8y.$$
Elementary Technical Mathematics
by Nelson, Robert; Eren, Dale;
Published by
Brooks Cole
ISBN 10:
1285199197
ISBN 13:
978-1-28519-919-1
Chapter 6 - Cumulative Review - Page 265: 12
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