1.3 2/5 - 2 2/3 : 2 2/15 =2.(3 2/9 - 1/3) : 2/9 =3. (2 3/5 + 1 2/3) × 3 3/4=4. (1 5/7 + 2 1/3) × (2 .... Question from @harryratrii

August 2022 1 5 Report

1.3 2/5 - 2 2/3 : 2 2/15 =

2.(3 2/9 - 1/3) : 2/9 =

3. (2 3/5 + 1 2/3) × 3 3/4=

4. (1 5/7 + 2 1/3) × (2 2/3 - 1 1/3)=

5. (5 2/3 - 2 1/4) : (3 2/5 + 2 1/6)

tolong dijawab dengan benar

inifira01

Penjelasan dengan langkah-langkah:

$1. \: \: 3 \frac{2}{5} - 2 \frac{2}{3} \div 2 \frac{2}{15} = \frac{17}{5} - (\frac{8}{3} \div \frac{32}{15}) = \frac{17}{5} - ( \frac{8}{3} \times \frac{15}{32} ) = \frac{17}{5} - \frac{5}{4} = \frac{68 - 25}{20} = \frac{43}{20} = 2 \frac{3}{20}$

$2. \: \: (3 \frac{2}{9} - \frac{1}{3} ) \div \frac{2}{9} = ( \frac{29}{9} - \frac{1}{3} ) \times \frac{9}{2} = ( \frac{29 - 3}{9} )\times \frac{9}{2} = \frac{26}{9} \times \frac{9}{2} = 13$

$3. \: \: (2 \frac{3}{5} + 1 \frac{2}{3} ) \times 3 \frac{3}{4} = ( \frac{13}{5} + \frac{5}{3} ) \times \frac{15}{4} = ( \frac{39 + 25}{15} ) \times \frac{15}{4} = \frac{64}{15} \times \frac{15}{4} = 16$

$4. \: \: (1 \frac{5}{7} + 2 \frac{1}{3} ) \times (2 \frac{2}{3} - 1 \frac{1}{3} ) = ( \frac{12}{7} + \frac{7}{3} ) \times ( \frac{8}{3} - \frac{4}{3} ) = ( \frac{36 + 49}{21} ) \times ( \frac{4}{ 3} ) = \frac{85}{21} \times \frac{4}{3} = \frac{340}{63} = 5 \frac{25}{63}$

$5. \: \: ( 5\frac{2}{3} - 2 \frac{1}{4} ) \div (3 \frac{2}{5} + 2 \frac{1}{6} ) = ( \frac{17}{3} - \frac{9}{4} ) \div ( \frac{17}{5} + \frac{13}{6} ) = ( \frac{68 - 27}{12} ) \div ( \frac{102 + 65}{30}) = \frac{41}{12} \times \frac{30}{167} = \frac{41 \times 5}{167} = \frac{205}{167} = 1 \frac{38}{167}$