Answer
$\{-10\}$
Work Step by Step
Subtract $t$ from both sides.
$0.9t-t=1+t-t$
Simplify.
$-0.1t=1$
Divide bot sides by $-0.1$.
$\dfrac{-0.1t}{-0.1}=\dfrac{1}{-0.1}$
Simplify.
$t=-10$
Hence, the solution to the equation is $\{-10\}$.
Precalculus (10th Edition)
by Sullivan, Michael
Published by
Pearson
ISBN 10:
0-32197-907-9
ISBN 13:
978-0-32197-907-0
Appendix A - Review - A.6 Solving Equations - A.6 Assess Your Understanding - Page A51: 32
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