$\"\"$ $\"\"$

The inequlaity is $\"\"$ .

$\"\"$ (Apply commutative property of addition: $\"\"$ )

Apply subtraction property of inequality: Subtract 9 from each side.

$\"\"$

$\"\"$ (Apply additive inverse property: $\"\"$ )

$\"\"$ (Apply additive identity property: $\"\"$ )

$\"\"$ (Subtract: $\"\"$ )

$\"\"$

Check:

To substitute a number less than or equal to 4 in $\"\"$ .

$\"\"$ (Substitute b = 4)

$\"\"$ (Add: 9 + 4 = 13)

The inequality is true $\"\"$

The inequality solution set is $\"\"$ .