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![](https://blog.hocmai.vn/wp-content/uploads/2017/07/hot.gif)
![](https://blog.hocmai.vn/wp-content/uploads/2017/07/hot.gif)
Bài 1:
b) $a = ?$ ; $b = ?$
Bài 2: Tìm $a, b, c, d, e, f$ biết:
- $b - a = 1$
- $2a + 3b = 18$
b) $a = ?$ ; $b = ?$
Bài 2: Tìm $a, b, c, d, e, f$ biết:
- $b = \frac{1}{2}c$
- $a = 1,5b + 10$
- $c = \frac{4}{7}d$
- $e = \frac{1}{5}c$
- $f = \frac{1}{10}b$
- $a + b + c + d = 2010$