Răspuns :
A) 423+96=519
519-234=285
285-48=237
237+145=382
a=519
b=285
c=237
d=382
B) 700-339=361
434-95=339
276+158=434
921-645=276
a=921
b=434
c=276
d=339
519-234=285
285-48=237
237+145=382
a=519
b=285
c=237
d=382
B) 700-339=361
434-95=339
276+158=434
921-645=276
a=921
b=434
c=276
d=339