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a×42+720-720÷9=1060
aflati pe a va rog !


Răspuns :

Ax42+720-720:9=1.060
Ax42+720-80=1.060
Ax42+720=1.060+80
Ax42+720=1.140
Ax42=1.140-720
Ax42=420
A=420:42
A=10
a×42+720-80=1060
a×42 +640=1060
a=10