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Wie rechnet man (2-17/16)x(-12)-15x-3/20

 26.09.2016
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Wie rechnet man (2-17/16)x(-12)-15x-3/20

 

\({\color{red}(2-\frac{17}{16} )\times (-12)-15\times (-\frac{3}{20} )}\)

 

= \({\color{Black}\frac{(32-17)\times (-12)}{16}+\frac{45}{20} }\)

 

= \(-\frac{180}{16}+\frac{9}{4} \) =  \(\frac {-180+36}{16}\)

 

= \(-\frac{144}{16} \)

 

= \({\color{Blue}-9}\)      laugh !

 26.09.2016
bearbeitet von asinus  26.09.2016

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