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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 8: giải phương trình: $\frac{4x}{x^{2}+4x+3}-1=6(\frac{1}{x+3}-\frac{1}{2x+2})$

Toán Lớp 8: giải phương trình:
$\frac{4x}{x^{2}+4x+3}-1=6(\frac{1}{x+3}-\frac{1}{2x+2})$

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222-9+11+12:2*14+14 = ? ( )