1. denominator: multiply the least common multiple of each denominator on both sides of the equation (items without denominator should also be multiplied);

2. Remove the brackets: first remove the brackets, then remove the brackets, and finally remove the braces; (If there is a minus sign outside the brackets, please remember to change the sign.)

3.

Shift term: move all the terms containing unknowns to one side of the equation and all other terms to the other side of the equation; Move the item to change the symbol.