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

Question

1908 views around the world

You can reuse this answer
Creative Commons License

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#