(x + 7) - 2 = 10
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Shipping and Returns Policy
- Deliver to United States » Shipping Policy «
- - Shipping Cost: $5.99
- - Handling time: 2-3 business days
- - Transit time: 7-10 business days
- Eligible for » Returns & Refund Policy « within 30 days from the date of delivery
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bài tập tìm thành phần chưa biết lớp 3
- 78 - x = 63
- x / 2 = 35 * 4
- 10 * x = 40
- 124 - x = 39 * 2
- x / 10 = 90 * 7
- 11 - x = 15 / 3
- x / 7 = 70 * 6
- x * 8 = 120 - 4
- 40 x = 5
- x + 5 = 8 + 2
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