Let's revise the rules of BIDMAS.
B - Brackets
I - Indices
D - Division
M - Multiplication
A - Addition
S - Subtraction
BIDMAS is the order in which your calculations should be done. Brackets, Indices (powers; ie [tex] x^{2} [/tex]), Division, Multiplication, Addition then Subtraction.
Let's apply it to your equation:
4 x ( 10 - 12 ) - 6
〜 Brackets
In our brackets we have 10 - 12, which is equal to -2. We can know replace the entire bracket and its contents with just -2. Making our equation 4 x -2 - 6.
〜 Indices
Our equation doesn't have any indices.
〜 Division
Our equation doesn't require any divisions.
〜 Multiplication
Our equation asks us to do 4 x -2, which is -8. We can now substitute the first half of our equation for -8, resulting in:
-8 - 6
〜 Addition
Our equation doesn't require any addition.
〜 Subtraction
Finally, all we need to do now is -8 - 6 (negative 8, minus 6).
This gives us a final answer of -14.
4 x ( 10 - 12 ) - 6 = -14
Hope this helps! ッ
