How do you solve $1/2z<20$ ?

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Answer 1 · 2017-10-21T17:41:37

$z<40$

To isolate for $z$ , multiply by the reciprocal of the coefficient, which is $2$ :

$\frac{1}{2}x<20$

$2\cdot\frac{1}{2}z<20\cdot 2$

Simplify both sides

$z<40$

This means that any value of $z$ less than $40$ will satisfy this inequality.

Answer 2 · 2017-10-21T18:25:28

$z<40$

$1/2 z <20$
Multiply both sides by $color(red)(2)$
$2(1/2 z) < (2)(20)$
$cancel2/cancel2 z < 40$
$z < 40$

How do you solve 1/2z<201/2z<20?