Tìm x: x : 2 = 5 × 2 x : 3 = 45 : 5 x : 4 = 3 × 2 x : 5 = 3 × 3
Giải thích
x : 2 x : 2 x x | = 5 × 2 =10 = 10 : 2 = 5
| x : 3 x : 3 x x | = 45 : 5 = 9 = 9 × 3 = 27
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x : 4 x : 4 x x | = 3 × 2 = 6 = 6 × 4 = 24 | x : 5 x: 5 x x | = 3 × 3 = 9 = 9 × 5 = 45 |
x : 2 x : 2 x x | = 5 × 2 =10 = 10 : 2 = 5
| x : 3 x : 3 x x | = 45 : 5 = 9 = 9 × 3 = 27
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x : 4 x : 4 x x | = 3 × 2 = 6 = 6 × 4 = 24 | x : 5 x: 5 x x | = 3 × 3 = 9 = 9 × 5 = 45 |