(2-1)(329+91)=?

To solve the expression \((2-1)(329+91)\), we will first simplify each part of the expression.

1. Calculate \(2 - 1\): \[ 2 - 1 = 1 \]

2. Calculate \(329 + 91\): \[ 329 + 91 = 420 \]

Now, we substitute back into the expression: \[ (2 - 1)(329 + 91) = 1 \times 420 \]

Now, perform the multiplication: \[ 1 \times 420 = 420 \]

So, the final answer is: \[ \boxed{420} \]