The value of the expression 9+3-22-1-4 is -15. Placing grouping symbols to obtain a value of 45 results in (9+3) - (22-1-4) = -5.
The expression 9+3-22-1-4 can be calculated by following the rules of addition and subtraction:
9 + 3 = 12
12 - 22 = -10
-10 - 1 = -11
-11 - 4 = -15
Therefore, the value of the expression 9+3-22-1-4 is -15.
To place grouping symbols so that the value of the expression is 45, we can add parentheses as follows:
(9+3) - (22-1-4)
Calculating the expression within the parentheses first:
9 + 3 = 12
22 - 1 - 4 = 17
Substituting these values back into the expression:
12 - 17 = -5
Therefore, the expression 9+3-22-1-4 with grouping symbols placed to give a value of 45 is (9+3) - (22-1-4) which evaluates to -5.