Question

plese answer this question step by step​

Answer 1

Answer:

$abi = 3a - b + 12i \\ 3a - b = 0 ......(1)\\ ab = 12 \\ b = \frac{12}{a} \\ from(1) \\ 3a - \frac{12}{a} = 0 \\ 3 {a}^{2} - 12a \: = 0 \\ 3a(a - 4) = 0 \\ a - 4 = 0 \\ a = 4 \: (a \: is \: not \: equal \: to \: zero) \\ b = 3 \\ \\ hope \: it \: will \: help \: you$