Answer:
−85
Explanation:
Let us restate the problem once more;
(-8.5)(-5)(-2) = ?
In mathematical problems as such, it is best to apply the order of operation called PEMDAS;
P = Parentheses
E = Exponent
M = Multiplication
D = Division
A = Addition
S = Subtraction
Between multiplication and division, we can carryout anyone first since division can be expressed as multiplication. This is also the case of addition and subtraction.
Note also, the negative sign.
+ x + = +
+ x - = -
- x - = +
Now, let us solve the problem;
(-8.5)(-5)(-2);
we simply solve from left to right; to remove the parentheses simply introduce the multiplication sign;
- 8.5 x - 5 x - 2 = 42.5 (-2)
= -85
Therefore, the expression resolves into -85.