Answer
$12y-11x+14z$
Work Step by Step
We simplify by removing the parentheses and then add the like terms as follows:
$$
(5y - 7x + 4z) + (3z - 6y + 2x) + (13y + 7z - 6x)\\
=5y - 7x + 4z + 3z - 6y + 2x+ 13y + 7z - 6x\\
=12y-11x+14z
.$$
Elementary Technical Mathematics
by Nelson, Robert; Eren, Dale;
Published by
Brooks Cole
ISBN 10:
1285199197
ISBN 13:
978-1-28519-919-1
Chapter 5 - Section 5.3 - Addition and Subtraction of Polynomials - Exercise - Page 221: 26
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