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Afla numarul necunoscut folosind metoda mersului invers:
a+22.832+654=45.400
32.574+b+9.345=52.432
c-34.243+22.222-13.432=28.805
9.572-d+12.200-8.324=5.000
Va rog sa ma ajutati!
Ofer coroana!


Răspuns :

a+22.832=45400-654=44746
a=44.746-22.832
a=21.914

b+32.574=52.432-9.345=43.087
b=43.087-32.574
b=10513

c-34.243+22.222=28.805+13.432=42237
c-34.243=42237-22.222=20015
c=20015+34.243=54258

9572-d+12.200=5000+8.324=13.324
9572-d=13.324-12.200=1124
d=9572-1124=8.448