$\"\"$

The expression is $\"\"$ \ \

$\"\"$ (Cross multiply)

$\"\"$ (Multiply: $\"\"$ ) $\"\"$

$\"\"$ (Add 7 to each side)

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

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

Verify:

To check the solution, substitute $\"\"$ in original equation.

$\"\"$

$\"\"$ (Subtrac: $\"\"$ ) \ \

$\"\"$ (Multiply: $\"\"$ )

Compare the values, the equation is true.

$\"\"$

The value of $\"\"$ .