# How do you solve and write the following in interval notation: #-7<b/9<0#?

##### 1 Answer

Apr 4, 2018

See explanation.

#### Explanation:

To solve such double inequality you can use all methods used in standard inequalities only remembering to use them for all sides. Here you can multiply all sides by

#-7 < b/9 < 0# ##

After multiplying by

#-63 < b < 0#

The numbers fulfilling the inequality are greater than **and** smaller than