Answer:
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, \(b - 4.2 < -7.5\)
