Question

Find: (a + b)-1 (a-1 + 6-1)​

Answer 1

Answer:

your question is confusing, please modify it

Answer 2

Answer:

$(a + b) - 1(a - 1 + 6 - 1) \\ (a - b)(a - 2 + 6) \\ (a - b)(a + 4) \\ hope \: it \: may \: help \: you$