$\"subtraction$ $\"\"$

The equality is $\"\"$

According to subtraction property of equality: Subtract 7 from each side.

$\"\"$

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

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

$\"\"$ (Sustract: $\"\"$ )

Graph the solution set o n a number line $\"\"$

Check:-

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

$\"\"$ (Substitute $\"\"$ )

$\"\"$ (Sustract: $\"\"$ )

The equality is true.

$\"\"$

The equality solution is $\"\"$ .