Answer
$m=-25$
Work Step by Step
$28+m=3$
$28+m-28=3-28\longrightarrow$ subtract 28 from both sides
$m=-25$
To check, substitute the value for m and see of the result is true.
$28+(-25)=3$
$3=3\checkmark$
Elementary Technical Mathematics
by Nelson, Robert; Eren, Dale;
Published by
Brooks Cole
ISBN 10:
1285199197
ISBN 13:
978-1-28519-919-1
Chapter 6 - Section 6.1 - Equations - Exercises - Page 238: 12
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