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Another type of subtraction equation is 16-b=7. explain how you would sole this equation then solve it.

Add. express your answer in simplest form. 12 9/10+2 2/3 = i need u guys to me find the answer to this question

Which function has an inverse that is also a function? a.{(-4,3), (-2, 7), (-1,0), (4, -3), (11, -7)} b.{(-4, 6), (-2, 2), (-1, 6), (4,2), (11, 2)} c.{(-4,5), (-2, 9), (-1,8), (4, 8), (11,4)} d.{(-4,4), (-2, -1), (-1,0), (4, 1), (11, 1)}