A/5x-10+6/6x-12; 12-y/6y-36-6/y^2-6y; x-12a/x^2-16a^2-4a/4ax-x^2; РЕШИТЕ ПОЖАЛУЙСТА

A) a/( 5x - 10 ) + 6/( 6x - 12 ) = ( 6a + 30 ) / ( 30( x - 2 )) = ( 6( a + 5 )) / ( 6*5*( x - 2)) = ( a + 5 ) / ( 5x - 10 )  ------------------------------------ Б) ( 12 - y )/( 6y - 36 ) - ( 6 / ( y² - 6y ))= ( y( 12 - y ) - 36 ) / ( 6y( у - 6 )) = = ( 12y - y² - 36 ) / ( 6y( y - 6 )) = ( - ( y - 6 )² ) / ( 6y( y - 6 )) = ( 6 - y ) / 6y  --------------------------------------- B) ( x - 12a ) /( x² - 16a² ) - ( 4a / ( 4ax - x² )) = ( - x( x - 12a ) - 4a( x + 4a )) / / ( - x( x - 4a )( x + 4a )) = ( - x² + 12ax - 4ax - 16a² ) / ( - x( x - 4a )( x + 4a )) = = ( - x² + 8ax - 16a² ) /( - x( x - 4a )( x + 4a )) = ( - 1( x - 4a )² ) / ( - x( x - 4a )( x + 4a )) = ( - 1 ( x - 4a )) / ( - x ( x + 4a )) = ( x - 4a ) / ( x( x + 4a )) =  = ( x - 4a ) / ( x² + 4ax )