I need to know what 6[5x (41-36) - (8+4) equals

The answer is 78.

The steps:

6[5 * (41-36) - (8+4) ]

1. 6[5 * (5) - (12) ]

You do the operations between the parenthesis.

2. 6[25-12]

Follow the order of operations and in this case it's multiplying.

3. 6[13]

Finish what's left between the big parenthesis

4. = 78

multiply the last number in between the parenthesis with the number outside and you'll get the answer