11 6/15x2 18/20:7,2+1 8/9

11 6/15×2 18/20:7,2+1 8/9

Cara dan jawaban terlampir sebagai berikut.

$11 frac{6}{15} times 2 frac{18}{20} div 7.2 + 1 frac{8}{9} = \ \ frac{171}{15} times frac{58}{20} div frac{72}{10} + frac{17}{9} = \ \ frac{9918}{300} div frac{72}{10} + frac{17}{9} = \ \ frac{9918}{300} times frac{10}{72} + frac{17}{9} = \ \ frac{99180}{3600} + frac{17}{9} = \ \ frac{99180}{3600} + frac{6800}{3600} = \ \ frac{105980}{3600}$

Follow.