Analysis: Party A and Party B go to buy watermelon. If Party A buys watermelons, it will be six yuan less. If Qian Yi buys watermelons, it will be four dollars less.

If I have no problem, this watermelon is x yuan. Then we will soon know that A has x-6 and B has x-4.

Buy it by two people together, just right. We can get such an equation.

x=(x-6)+(x-4)

x= 10

A: The price of watermelon is 10 yuan.

Extended data:

The key to solving a problem is to find out the quantity in the problem and its corresponding score.

Thinking methods to solve such problems:

1, analysis method: analysis method is a thinking method that starts from the problem sought in the problem and gradually finds out the known conditions necessary to solve the problem.

2. Synthesis method: Synthesis method is a way of thinking that gradually calculates the problem to be solved from the known conditions in the topic.

3. Decomposition method: A complex application problem is decomposed into several basic application problems, from which clues to solve the problem can be found.