Order of Operations: Order of operations (PEMDAS): Parentheses, exponents, multiplication, and division (from left to right). Addition and subtraction (from left to right). We have: 1−4−6. According to PEMDAS, we do not have any parentheses, exponents, multiplication, or division to deal with, so we move directly to addition and subtraction, which are performed from left to right.
Perform First Subtraction: Perform the first subtraction. Subtract 4 from 1. 1−4=−3.
Perform Second Subtraction: Perform the second subtraction. Subtract 6 from the result of the first subtraction. −3−6=−9.
More problems from Evaluate numerical expressions involving integers