How do you solve $|1 - 4t| = 9$ ?

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Answer 1 · 2016-09-02T07:34:26

$t= 5/2" or "t=-2$

Consider: $|-9|=9" and "|+9|=9$

So the conditions we are testing for is $1-4t=+-9$

Suppose $1-4t=9$

$=>4t=1-9$

$4t=-8$

$t=-2$

'~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Suppose $1-4t=-9$

$4t=1+9$

$t=10/4 = 5/2$

How do you solve |1 - 4t| = 9|1 - 4t| = 9?