what do you notice about equations that are in each of these categories? use complete sentences to answer. a. 2x 3 = 2x 7 b. 7x 3 = 7x 3 c. 4x 22 = 8x 10 d. 5x 5 = 5x 4 e. 3x 18 = 5x 8 f. 3(4x 8) = 4(3x 6)