February 2023 2 20 Report
resoudre les équations suivante :
[tex] \frac{11.4 \times 34 + 30 \times 12.1 + 21x}{85} = 11.4[/tex]
[tex] \frac{20 \times 9.5 + 11x}{20 + x} = 10[/tex]
merci d'avance ​
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