Question

3a-b(a-(1-a) )-b(1-2a)​

Answer 1

Hey mate,

3a-b[a-(1-a)] -b(1-2a)

3a-b[a-1+a] - b(1-2a)

3a-b(2a-1) -b(1-2a)

3a - 2ab + b - b + 2ab

3a - 2ab + 2ab + b - b

3a

Hope this helps✌✌✌