You still can use 4P as the equation for the total, which now would be 4 x ($100 each) = $400. The above example is extremely simple. In reality, most algebraic expressions have at least two ...

Everyone knows that arithmetic is true: 2 + 2 = 4. But surprisingly, we don’t know why it’s true.. By stepping outside the box of our usual way of thinking about numbers, my colleagues and I ...