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

The expression is $\"\"$ .

According to addition property of equality: if a = b, then a + c = b + c.

$\"\"$ (Add 4 to each side)

$\"\"$ (Additive inverse property: $\"\"$ )

$\"\"$ (Add: $\"\"$ ) $\"\"$

Check:

To check the solution Substitute the value of $\"\"$ in above expression.

$\"\"$

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

The value of $\"\"$

By the number line $\"\"$

$\"number$