$\"subtraction$ $\"\"$

The equality is $\"\"$

Apply addition property of equality: Add 10 to each side.

$\"\"$

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

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

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

Check:

To check, substitute $\"\"$ , in $\"\"$ .

$\"\"$

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

The equality solution is $\"\"$ . \ \