371+483 х а+629 = 4344+1256+744 хd = 356 х73+622 х у+27 х356 = 20 х60 х 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.