Evaluate the expression. \[ (10+5) \div(7-10) \]

Let's break down the expression step by step. First, evaluate the operations inside the parentheses: 1. Calculate \(10 + 5\): \[ 10 + 5 = 15 \] 2. Calculate \(7 - 10\): \[ 7 - 10 = -3 \] Now, substitute these results back into the expression: \[ (10 + 5) \div (7 - 10) = 15 \div (-3) \] Next, perform the division: \[ 15 \div (-3) = -5 \] Thus, the value of the expression is: \[ \boxed{-5} \]