371+483х а+629= 4344+1256+744хd= 356х73+622х у+27х356= 20х60х а х300=

1 ) 371+ 483 * а + 629 = ( 371 + 629 ) + 483 * a = 1000 + 483 * a ;2 ) 4344 + 1256 + 744 * d = ( 4 344 + 1 256 ) + 744 * d = 5 600 + 744 * d ;3 ) 356 * 73 + 622 * у + 27 * 356 = ( 356 * 73 + 27 * 356 ) + 622 * y = 356 * ( 73 + 27 ) + 622 * y = 356 * 100 + 622 * y = 35600 + 622 * y ;4 ) 20 * 60 * а * 300 = 1200 * a * 300 = 360000 * a.