Question #ae753

2 Answers
Feb 4, 2018

Any rational number less than -7.5.

Explanation:

Dividing by a fraction is the same thing as multiplying by its reciprocal. Using this and the given information, let's write an inequality, with x being equal to the rational number.

x *2/-3 > 5

This can also be written as

(2x)/-3 > 5

To simplify, multiply by -3. When multiplying by a negative number, the sign must be flipped.

2x < -15

Now divide by 2 to isolate x.

x < -7.5

So, any rational number less than -7.5 would be an answer. Some possible answers are -8, -27, and -85.

Feb 5, 2018

Some possible values are: 7 1/3, 7 1/4, 7 , 6 1/2, 6 ....

Explanation:

Let's call the number we are looking for x

Write an inequality to match the information.

A number, divided by -3/2 must be greater than 5

x div -3/2 > 5" "larr solve for x

x /(-3/2) >5

Multiply both sides by -3/2 to cancel the division by -3/2.
Remember that the inequality sign must change if you multiply or divide by a negative value,

x /cancel(-3/2) color(blue)(xxcancel(-3/2)) < 5 color(blue)(xx-3/2)

x < -15/2

The number can be any value which is less than 7 1/2

They can be integers or fractions.

Some possible values are: 7 1/3, 7 1/4, 7 , 6 1/2, 6 ....