Question

4*4+4*4+4-4*4=?

Answer 1

order of operations. so multiplactions first, then additions and subtractions along the line.
So it becomes 16 + 16 + 4 - 16 = 36 - 16 = 20

Answer 2

Remember that order of operations is:
1. Parentheses (Brackets)
2. Exponentials (aka indices/powers)
3. Multiplication and Division (These have the same priority, so do in the order that they are given)
4. Addition and Subtraction (These also have the same priority, so do in the order that they are given)