Toán Lớp 8: Thực hiện phép tính
d) $\frac{3}{2x+6}$ – $\frac{x-6}{2x^2+6x}$
e) $\frac{2x+6}{3x^2-x}$ : $\frac{x^2+3x}{1-3x}$
f) $\frac{3}{2x^2y}$ + $\frac{5}{xy^2}$ + $\frac{x}{y^3}$
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Toán Lớp 8: Thực hiện phép tính
d) $\frac{3}{2x+6}$ – $\frac{x-6}{2x^2+6x}$
e) $\frac{2x+6}{3x^2-x}$ : $\frac{x^2+3x}{1-3x}$
f) $\frac{3}{2x^2y}$ + $\frac{5}{xy^2}$ + $\frac{x}{y^3}$
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