$\"\"$

Observe the triangle figure, the height(h) of triangle is 16 cm, base(b) is x cm and its area(A) 72 square cm.

The area formula of triangle is $\"\"$ .

Substitute the values of $\"\"$ in the above formula.

$\"\"$

Cancel common terms.

$\"\"$ . $\"\"$

Apply division property of equality: If $\"\"$ then $\"\"$ .

Divide each side by 8.

$\"\"$

Cancel common terms.

$\"\"$ . $\"\"$

The equation is $\"\"$ and the value of $\"\"$ .