Choose 9 numbers from 0-9 and fill in 9 boxes to form three subtraction formulas. Make each formula true? Each number is not repeated

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• 1. Write an addition and a subtraction according to 4.7-3.9 = 0.8
• 2. 2.5.7.0.8.6.3.1.4.9 be able to write several groups of formulas, four methods plus four subtractions
• 3. Can you make the nine numbers 1-9 (each number is used only once) into a formula of three digits minus three digits to get three digits?
• 4. A group of numbers: 1,0, - 1 / 3,0,1 / 5,0, - 1 / 7,0
• 5. 2.3.5.6.7.8.9.10 four addition formulas of eight sequences are equal to 10.11.12.13 respectively, but each number can only be used once,
• 6. Sequence 3, 5, 9, 17 I find that the latter term is equal to 2 times of the former term minus 1
• 7. Three identical numbers are arranged into three simple formulas, and the results must be equal to 30, Are three identical numbers, 30 + 30-30 = 30 * 30 / 30 = 30 / 30 * 30 = 30
• 8. Choose three numbers from 13,7,21,15,56,6,41 and write two addition and two subtraction
• 9. Hello, uncle and aunt. Please help me. Choose three numbers in 10,6,8,2 and write two addition and two subtraction
• 10. Choose three numbers from 12, 5, 8 and 7 to write two additions and two subtractions
• 11. Do not repeat 1 -- 9 to form two additions and one subtraction （）+（）=（） （）+（）=（） （）+（）=（）
• 12. In a subtraction formula, add the subtracted and the difference, and the result is 18.6. If the difference is 4.9, how much is the subtraction? (urgent!) And how to make the formula.
• 13. In a subtraction formula, add up the subtracted, subtracted and difference, and the result is 346. If the new formula is 26, what is the subtraction?
• 14. In a subtraction formula, the sum of the subtracted, subtracted and difference results in 34.6. If the difference is 2.6, what is the subtraction?
• 15. In a subtraction formula, the sum of the subtracted, the subtracted sum and the difference is 36 / 41. Given that the subtracted is 2 / 9 of the subtracted, what is the subtracted? What is the subtracted
• 16. In a subtraction formula, the sum of the subtracted, the subtracted and the difference is 36 out of 41 What is the difference between the subtracted and the subtracted
• 17. A subtraction formula, the sum of the subtracted, the subtracted and the difference is 36 / 41. It is known that the subtracted is equal to 2 / 9 of the subtracted, so what is the subtracted?
• 18. In a subtraction formula, the sum of the subtracted, the subtracted and the difference is 388. The subtracted is 16 larger than the difference. What is the subtracted
• 19. In a subtraction formula, the sum of the three numbers is 388. The subtraction is 16 times greater than the difference
• 20. In a subtraction formula, the sum of the subtracted number and the difference is 388. The subtraction is 16 times greater than the difference. What are the differences