Respuesta :

mjankiewicz
Proportion - I multiply "on the cross"

[tex]\frac{8}{14}=\frac{3}{x}\\\\\frac{4}{7}=\frac{3}{x}\\\\4x=3\cdot 7\\\\ 4x=21 \\\\ x=\frac{21}{4}=5\frac{1}{4}=5.25[/tex]
Do the butterfly and the answer 5.25

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