Drag the tiles to the correct boxes to complete the pairs. Not all tiles will be used. Match each statement to its correct expression.
9 - (n x 3)
(n x 3) - 9
9 = (n x 3)
9 = (n + 3)
9 = (n − 3)
(n x 3) = 9
(n + 3) = 9
nine divided by the product of a number and three
nine divided by the sum of a number and three
nine less than the product of a number and three

If m∠abc = 70°, what is m∠abd? justify your reasoning.  using the addition property of equality, 40 + 70 = 110, so m∠abd = 110°.  using the subtraction property of equality, 70 − 30 = 40, so m∠abd = 30°.  using the angle addition postulate, 40 + m∠abd = 70. so, m∠abd = 30° using the subtraction property of equality.  using the angle addition postulate, 40 + 70 = m∠abd. so, m∠abd = 110° using the addition property of equality.