1,31+7 6/7 -24% dengan cara

[tex]1.31 + 7 \ \frac{6}{7} - 24\% \\ = 1.31 + \frac{55}{7} - \frac{24}{100} \\ = 1.31 + 7.85 - 0.24 \\ = 8.92 \\ = \frac{892}{100} \\ = \frac{223}{25} \\ = 8 \ \frac{23}{25} [/tex]