Finding the reduced value of 7a - [3B - (a-2c) - C]

Finding the reduced value of 7a - [3B - (a-2c) - C]

7A - [3B - (a-2c) - C] reduction
=7a-3b+(a-2c)+c
=7a-3b+a-2c+c
=8a-3b-c