Bonjour,
Entrainement 3 :
[tex]\frac{2}{3} *\frac{7}{5}=\frac{14}{15}[/tex]
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[tex]\frac{3}{5}*\frac{9}{6}=\frac{27}{30}[/tex]
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[tex]\frac{8}{9} *\frac{1}{3}=\frac{8}{27}[/tex]
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[tex]\frac{7}{5}*\frac{7}{3} =\frac{49}{15}[/tex]
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[tex]\frac{4}{5}*\frac{7}{3}=\frac{28}{15}[/tex]
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[tex]\frac{5}{7}*\frac{3}{2}=\frac{5}{14}[/tex]
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[tex]\frac{6}{13}* 8=\frac{48}{13}[/tex]
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[tex]5*\frac{7}{3}=\frac{35}{3}[/tex]
Entrainement 4 :
[tex]A = (\frac{10}{7}-\frac{3}{7})*\frac{4}{5} \\\\A = \frac{7}{7}* \frac{4}{5}\\\\A = 1 * \frac{4}{5}\\\\A = \frac{4}{5}[/tex]
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[tex]B = (\frac{6}{5}+\frac{2}{5})*\frac{3}{7} \\\\B = \frac{8}{5}* \frac{3}{7}\\\\B = \frac{24}{35}[/tex]
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[tex]C = \frac{4}{5}*(\frac{2}{3}+\frac{8}{3} )\\\\C = \frac{4}{5}*\frac{10}{3}\\\\C = \frac{40}{15}\\\\C = \frac{40:5}{15:5}\\\\C = \frac{8}{3}[/tex]
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[tex]D = 10*(\frac{7}{11}+\frac{5}{11})\\\\D = 10*\frac{12}{11}\\\\D = \frac{120}{11}[/tex]
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[tex]E = (\frac{16}{4}+\frac{3}{4})*(\frac{8}{3}-\frac{7}{3})\\\\E = \frac{19}{4}*\frac{1}{3}\\\\E = \frac{19}{12}[/tex]
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[tex]F = \frac{2}{9}*(\frac{7}{4}-\frac{5}{4})\\\\F = \frac{2}{9}*\frac{2}{4} \\\\F = \frac{2}{9}*\frac{2:2}{4:2}\\\\F = \frac{2}{9}*\frac{1}{2}\\\\F = \frac{2}{18} \\\\F = \frac{2:2}{18:2}\\\\ F = \frac{1}{9}[/tex]
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[tex]G = (\frac{1}{12}+\frac{5}{12})*\frac{2}{3}\\\\ G =\frac{6}{12}*\frac{2}{3}\\\\G =\frac{6:6}{12:6}*\frac{2}{3}\\\\G =\frac{1}{2}*\frac{2}{3}\\\\G =\frac{2}{6}\\\\G = \frac{2:2}{6:2}\\\\G =\frac{1}{3}[/tex]
J’espère t’avoir aidé ^^
Bonne journée et bonne continuation.
