An arithmetic operation happens.
A calculator.
It adds and subtracts numbers.
155
the top adds what the bottom adds. the top subtracts what the bottom subtracts. the top divides what the bottom divides. the top multiplies what the bottom multiplies.
It adds fat and moisture to the recipe. Fat adds and carries flavor.
12
-1
nothing
Almost all tattoos hurt. It is the skill of the tattoo artist that adds or subtracts from the pain.
Many devices do so, or allow you to do so. Some of the more obvious ones are computers, calculators, and abacuses
Well, the Pope always adds ans subtracts churches, so He does. But the TRUE answers is God ,Mary, and their Son Jesus.
Before the days of automatic calculation, an accounting machine was a business machine using keys or stored data which tabulates, adds, subtracts, and totals.