If you were to shade 40 squares first and then shade 85 more would the answer be the same as shading 85 squares and then 40 more

Which of these choices show a pair of equivalent expressions?

He that is measured at 220° is a reflex angle. the opposite angle is obtuse. find the measure of obtuse .

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.