(1) \( 46 \pi+(-72 \pi) \)

Let's simplify that expression! When you combine \( 46\pi \) and \( -72\pi \), you can add the coefficients together while keeping \(\pi\) as is. So, \( 46 + (-72) = 46 - 72 = -26\). Therefore, the expression simplifies to \( -26\pi \). In mathematical terms, think of \(\pi\) as a common flavor in your mathematical smoothie! When you mix \( 46\) of one flavor and \( -72\) of another, you're left with a delightful \( -26\) of that same flavor, albeit with a tangy twist of being negative.