10–{12–[(−9)+(−1)]}=?
so? It's not 50 either.
Next step:
10 - (12 - (-9 - 1)) = 10 - (12-(-10)) = 10-(12+10) ...
It is not 8
Remember to do the parenthesis first, this is order of operations.
To solve this expression, follow the order of operations which is commonly known as PEMDAS (Parentheses, Exponents, Multiplication and Division from left to right, Addition and Subtraction from left to right).
Step 1: Start with the innermost parentheses.
Inside the parentheses, we have (-9) + (-1). The sum of -9 and -1 is -10.
Replacing (-9) + (-1) with -10, the expression becomes:
10 - {12 - (-10)}
Step 2: Simplify the expression inside the curly braces.
Inside the curly braces, we have 12 - (-10). Subtracting a negative number is equivalent to adding its positive counterpart:
12 - (-10) = 12 + 10 = 22
Replacing 12 - (-10) with 22, the expression becomes:
10 - 22
Step 3: Subtract 22 from 10.
10 - 22 = -12
So, 10 – {12 – [(-9) + (-1)]} equals -12.