$\"\"$

Hector requires $\"\"$ milliliters of $\"\"$ sulfuric acid.

He has a $\"\"$ of sulfuric acid solution and a $\"\"$ of sulfuric acid solution.

Find milliliters of each solution to mixed:

Let $\"\"$ is number of milliliters of $\"\"$ solution.

Make a table,

\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \

Observe the table:

Total amount of $\"\"$ acid plus Total amount of $\"\"$ acid equals Total amount of $\"\"$ acid. $\"\"$ .

$\"\"$

Solve the equation.

$\"\"$ (Original equation)

$\"\"$ (Simplify)

$\"\"$ (Subtract $\"\"$ from each side)

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

$\"\"$ (Divide each side by $\"\"$ )

$\"\"$ (Cancel common terms)

He mixed $\"\"$ milliliters mixed in $\"\"$ solution.

$\"\"$ (Substitute $\"\"$ in the equation)

$\"\"$ (Simplify)

Hector mixed $\"\"$ milliliters mixed in $\"\"$ solution and $\"\"$ milliliters mixed in $\"\"$ solution.

$\"\"$

Hector mixed $\"\"$ milliliters mixed in $\"\"$ solution and $\"\"$ milliliters mixed in $\"\"$ solution.