To simplify the expression, we first need to perform the operations within the parentheses and then apply the appropriate order of operations.
(3,9-5,80)-(-1/45-7/9)+1, Convert the comma decimal numbers to standard form (3.9-5.80)-(-0.0222-0.7778)+1. Perform subtraction within the parentheses (-1.9)-(-0.8)+1. Remember that subtracting a negative number is the same as adding a positive number, so the expression becomes (-1.9 + 0.8) + 1. Perform addition within the parentheses -1.1 + 1. Since -1.1 + 1.1 equals 0 The final answer is 0.
To simplify the expression, we first need to perform the operations within the parentheses and then apply the appropriate order of operations.
(3,9-5,80)-(-1/45-7/9)+1,
Convert the comma decimal numbers to standard form
(3.9-5.80)-(-0.0222-0.7778)+1.
Perform subtraction within the parentheses
(-1.9)-(-0.8)+1.
Remember that subtracting a negative number is the same as adding a positive number, so the expression becomes
(-1.9 + 0.8) + 1.
Perform addition within the parentheses
-1.1 + 1.
Since -1.1 + 1.1 equals 0
The final answer is 0.