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rezolvati ecuatia: 5,5x+0,5x-2x+8=9

Răspuns :

Inmultesti cu 10 ecuatia.

55x + 5x -20x = 90 - 80 = 10
60x-20x=10
40x=10
x=1/4
5.5x+0.5x-2x+8=9
4x=1
x=1/4
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