3x/4 - x/4 = 4
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bài tập tìm thành phần chưa biết lớp 3
- x / 3 = 21 / 1
- 202 - x = 78 * 2
- x / 6 = 70 * 7
- 3 * x = 5 * 6
- x * 8 = 110 - 2
- 105 + x = 120
- x * 7 = 80 - 4
- 78 - x = 18 * 2
- x - (8 - 3) = 7
- 24 - x = 3 * 5
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