4x(x+3)(x+3)=

2x(x+1)

(x-6) (x-3)(x+3)=9x-3)(x-3)

5x(x+2)(x+4)=

5x(x+1)

(x-7 (x-3)(x+3)=9x-6)(x-3)

5x(x+1)(x+3)=

5x(x+1)

(x-6) (x-3)(x+3)=9x-6)(x-3)

$$\frac{\left(x-y\right)\left(x+y\right)}{x-y}=x+y$$  

$$\frac{\left(y+x\right)\left(y-x\right)}{y+x}=y-x$$  

$$\frac{\left(x-y\right)\left(x-x\right)}{x-y}=x-y$$  

$$\frac{7+4}{y_{-x}}$$  

$$\ \frac{x^2-y}{4^2-4y}\times\frac{y+7}{y-x}=\frac{\left(x-y\right)\left(x=y\right)}{\left(4-7\right)\left(y+7\right)}\times\frac{y+7}{y-x}\ \frac{\left(x=y\right)}{4-7}$$  

$$\frac{x+y}{4-4}\times\frac{y-7}{x-y}=\frac{\left(x-7\right)}{\left(7-4\right)}$$  

$$CM=23\times y^2=6\times y^2$$  

$$CM=19\times y^2=8\times y^2$$  

$$CM=22\times y^2=3\times y^2$$  

$$LCM=5\times1y^2$$  

$$LCM=5\times2y^2$$  

$$LCM=8\times3y^2$$  

$$x=2$$  

$$x=1$$  

$$\frac{\left(6x+3\right)}{\left(x+6x+3\right)}$$  

$$\frac{\left(2x+5\right)}{\left(x+2x+7\right)}$$  

$$x+1\ne0\ ,\ne x=-1$$  غير معرفة عند

$$x=-4\ne0\ ,\ \ne x=+4$$  

$$\frac{y^416mt^2}{21a^4b^3}\div\frac{7a^2b^2m^2}{24^{4,6}}=\frac{2t^2}{9a^2bm}$$  

$$\frac{y^218mt^2}{19a^3b^2}\div\frac{6a^3b^2}{33^{4.6}}$$