Answer:
Step-by-step explanation:
Since a number over the same number (ex: 1/1, 2/2, etc) is always 1, and since the two expressions are completely identical, the answer is 1.
a^3 (a^4) = a^7
(2a)(5ab) = 10a^2b
it is 4
12 ÷ 3 = 4
3 x 4 = 12
4 x 3 = 12