Letters and numbers all at the same time may seem terrifying, but trust me, it's better this way.[br][br]For instance:[br][br]Solve: half of three times a number. The sum of this value and the same number added to six is equal to the first number minus four times the second.[br][br]This is how algebra was done in the ancient times, in fact our way of using symbols, letters, and numbers is relatively new, only around 700 years old. [br][br]So, would you rather solve the above problem by reading it, or solving this: [math]\frac{3}{2}x+\left(x+6\right)=x-4\left(x+6\right)[/math][br]