⁸⁷ +(43+999-23)

To solve this expression, you would need to perform the operations in the parentheses first:

(43 + 999 - 23) = 1019

Then, you can add the result to 87:

87 + 1019 = 1106

Therefore, the solution to the expression 87 + (43 + 999 - 23) is 1106.