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Folosind procedeul mersului invers,afla numerele necunoscute:
2345+m+3256=7543
n-2108-4325=2436


Răspuns :

2345+m+3256=7543
2345+m=7543-3256
2345+m=4287
m=4287-2345
m=1942

Verificare :
2345+1942+3256=7543

n-2108-4325=2436
n-2108=4325+2436
n-2108=6761
n=2108+6761
n=8869

Verificare :
8869-2108-4325=2436