Question 338565
{{{-10h>75}}}

There are two approaches

Approach 1 (the usual one):

{{{-10h>75}}}

Use the principle that when both sides of an inequality
are multiplied or dividied by a negative number the
inequality sign is reversed, and divide both sides by
{{{-10}}}

{{{(-10h)/(-10)<75/(-10)}}}

{{{h<-15/2}}}


Approach 2:  without using that principle:

Add +10h to both sides

{{{-10h+10h>75+10h}}}

{{{0>75+10h}}}

Add -75 to both sides:

{{{-75>10h}}}

Divide both sides by the positive number 10

{{{-75/10>10h/10}}}

{{{-15/2>h}}}

Both answers are equivalent.

Edwin</pre>