PEMDAS
D
Dividing
4-5x5+3
5x5
4+6-(-3)-5
E
Exponents
(-4) + 7 x 8
7 x 8
2+9-(-1)
12
P
Parentheses
7-5+8-2
7-5
9/3+1-5
-1
A
addition
What comes first Division or Multiplication ?
It depends on which one is first in the problem.
Left-right
25+(4x1)-6
23
S
subtraction
4x5+7x7
4x5
(9/1) -1x2
7