Answer:
Remember PEMDAS (Please Excuse My Dear Aunt Sally)
Step-by-step explanation:
Use PEMDAS to help you evaluate any equation:
P - Parenthesis
E - Exponent
MD - Multiplication or Division (Whichever comes first)
DA - Division or Addition (Whichever comes first)
So:
15-1(12÷4+1) -> first evaluate the parenthesis
(12÷4+1) -> Inside the parenthesis, first evaluate the Division:
12÷4 = 3
so (12÷4+1) = (3+1) = 4
So; 15-1(4) -> evaluate the multiplication first:
1(4) = 4
so: 15-4 = 11
So the answer is 11
