Question
The mass of 6 magazines and 7 textbooks is 1.9 kg. The mass of 4 magazines and 7 textbooks is 1.64 kg. Find the mass of each textbook.
4 m

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The mass of 6 magazines and 7 textbooks is 1.9 kg. The mass of 4 magazines and 7 textbooks is 1.64 kg. Find the mass of each textbook.