Question

19 703 - d = 8 347 ; 210 + 147=x+319 ; 1 973+(y-73)=2 135; (623-295)-z=70 ;

376-(25+107-w)=319

Answer 1

19703-d=8347
d=19703-8347
d=11356
19703-11356=8347

210+147=x+319  x=357-319; 
x=38
357=38+319  ;  357=357

1973+(y-73)=2135 ; y=2135-1973+73; y=235
1973+(235-73)=2135 ;1973+162=2135

(623-295)-z=70 ;
328-z=70;  z=328-70 
z=258
328-258=70

376-(25+107+w)=319; 376-(132-w)=319
376-(132-75)=319;376-57=319
W=75