hitunglah hasil operasi hitung campuran bilangan berikut ini, a. 36x5/6+(-17), b. (-7/9):4/3-3, c. 40x(11/4-2/5), d. 3/8x5-1.5

hitunglah hasil operasi hitung campuran bilangan berikut ini, a. 36×5/6+(-17), b. (-7/9):4/3-3, c. 40x(11/4-2/5), d. 3/8×5-1.5

Jawaban:

$36 times frac{5}{6} + ( - 17) = 30 - 17 = 13$

$- frac{7}{9} div frac{4}{3} - 3 \ = - frac{7}{9} times frac{3}{4} - 3 \ = - frac{7}{12} - frac{36}{12} = - frac{43}{12} =$

$40 times ( frac{11}{4} - frac{2}{5} ) \ = 40 times ( frac{55}{20} - frac{8}{20} ) \ = 40 times frac{47}{20} = 2 times 47 = 94$

$frac{3}{8} times 5 - 1.5 \ frac{15}{8} - frac{15}{10} \ = frac{15}{8} - frac{3}{2} = frac{15}{8} - frac{12}{8} = frac{3}{8}$