Question

A number b minus 4.2 is less than −7.5

Answer 1

b - 4.2 < -7.5
subtract b and 4.2
less then sign is <
then <-7.5

Answer 2

Given: A number b minus 4.2 is less than -7.5.

Here, b is the number.

"less than" symbol is represented by '<'

"minus" means subtract.

"b minus 4.2" translated to b - 4.2

Then, our inequality becomes;

`b - 4.2 < -7.5`

To solve for b;

Add 4.2 both sides we get;

`b -4.2 + 4.2 < -7.5 + 4.2`

Simplify:

`b < -3.3`

Therefore, an inequality for the given word sentence is,
`b - 4.2 < -7.5`