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5 ( 3x - 1 ) = 15x-5
-4 ( 2a - b ) = -8a+4b
-2 ( -4b + 3 ) = 8b-6
( a + b ) * ( -4 ) =-4a-4b
( 4 - 5y + 6 y ) * 3 = 12+3y
-3 ( y - 3 ) = -3y+9
-1 ( 3x - y + 2 ) =-3x+y-2
( 10x + 2y ) : 2 =5x+y
( -3a + 12 ) : ( -3 ) =a-4
( 24a - 4b ) : 8 =3a-1/2b
( 4u - 6v ) : - 1/2 = -8u+12v