I'll help you calculate the specific figures.

Addition, subtraction, multiplication and division are the opposite.

Don't be confused by special equations.

Subtraction divided by unknowns

Add multiplication and become an average.

If it's a little more complicated,

Obviously, distance and convenience should be taken care of.

Extended data:

1, remove the brackets (first remove the brackets, then remove the braces). Pay attention to the application of the law of multiplication and distribution: additive commutative law: a+b=b+a Additive Law: (A+B)+C = A+(B+C); Multiplicative commutative law: a×b=b×a multiplicative associative law: (a× b )× c = a× (b× c); Multiplication and distribution law: (a+b) × c = a× c+b× c.

2. Denominator: Find the least common multiple of the denominator, and multiply the terms on both sides of the equation by the least common multiple of the denominator (the purpose of the denominator is to turn the fractional equation into an integer equation).

3. Moving term: "Move with symbol" moves from the left side of the equation to the right side of the equation, and the plus sign becomes a minus sign, and the minus sign becomes a plus sign. (The purpose of moving the term is to move the unknown term to both sides of the equation. ).

4. Merge similar terms: add and subtract terms containing unknowns, and add and subtract natural numbers (you can also calculate what can be calculated on both sides of the equation before moving the terms).

5, the coefficient is 1: (that is, the value of the unknown quantity is solved).

Baidu encyclopedia-fractional equation