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- The answer to the first volume of the seventh grade of the new mathematics learning plan
The answer to the first volume of the seventh grade of the new mathematics learning plan
Solution: If white leather has X pieces and black leather has (32-X) pieces.
6X+5(32-X)=6X+3X
Solve the equation, X= 16
32-X= 16
Answer: white leather 16, black leather 16.
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