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3.9+5x=14.4 ecuatii


Răspuns :

5x=14.4 - 3.9
5x=10.5
x=10.5 : 5
x=2.1


3.9+5×=14.4
5×=14.4-3.9
5×=10.5
×=10.5:5
×=2.1