Current location - Training Enrollment Network - Books and materials - Xiaoming and Xiaohong have a total of 20 story books. Xiaoming is six less than Xiaohong. How many are Xiaoming and Xiaohong? (Solve by equation, write a set, and an equivalence relation.
Xiaoming and Xiaohong have a total of 20 story books. Xiaoming is six less than Xiaohong. How many are Xiaoming and Xiaohong? (Solve by equation, write a set, and an equivalence relation.
Xiao Ming and Xiao Hong have 20 story books, and Xiao Ming has 6 fewer than Xiao Hong. Let Xiaoming and Xiaohong have X-6 and X-books respectively.

x -6 +x =20

2x = 26

x = 13

x -6 = 7

Xiaoming and Xiaohong each have 7, 13 copies.

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