2. 1÷x=3

x=2. 1÷3

x=(3*0.7)÷3

x=0.7

After solving the equation, it needs to be verified. Verification is to substitute the unknown value into the original equation to see if both sides of the equation are equal. If they are equal, then the value obtained is the solution of the equation.

Methods of solving equations:

1, denominator: both sides of the equation are multiplied by the least common multiple of each denominator.

2. Remove the brackets: generally remove the brackets first, then remove the brackets, and finally remove the braces, but sometimes the order can be determined according to the situation to make the calculation simple, or according to the multiplication and division method.

3. Move the term: move the term containing the unknown to the other side of the equation, and don't forget to change the sign when moving other terms to the other side of the equation.

4. Merge similar terms: transform the original equation into ax=b(a≠0).

5, coefficient is one: both sides of the equation are divided by the unknown coefficient at the same time.

6. Find the solution of the equation.