i just need to know these two!you‘ll get best answer! 2.5-4 3/5thanks
Well, go back to the definition: What do you add to 2.5 to get zero? x + 2.5 0 What do you multiply by to get one? x * 2.5 1 Solve those, and there's your first pair of answers. Do the same for the second one. If you have a calculator, there's an even easier way: the +/- button does additive inverse; the 1/x button does multiplicative inverse.
