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I can't do an equation application problem! !
One-dimensional equation solves seven kinds of problems that are often tested in application problems, hoping to help children and parents!

Question 1: Discount sale.

Answer: 400 yuan.

Question 2: Engineering and travel issues

Answer: 4 hours.

Question 3: savings problem

Answer: (1)800( 1+p%)

(2)B

Question 4: Calendar equation problem

Answer: (1) 7, 14, 2 1 none.

(2) 16, 17,23,24

Question 5: Chart problem

Answer: 20

Question 6: Area problem

Answer: 738

Question 7: Numbers.

Answer: 7 1

Children's poor academic performance is due to their failure to master learning methods.