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clasa a 3. x×200+4×42=484

Răspuns :

X×200+4×42=484
X×200+168=484
X×200=484-168
X×200= 316
X=316:200
X=1,58
X×200+168=484
X×200=484-168
X×200=316
X=316:200
X=1,58