Hasil dari 8/5 -90% +0,45× 1 ½ adalah

Hasil dari 8/5 -90% +0,45× 1 ½ adalah

$frac{8}{5} - 90 % + 0.45 times 1 frac{1}{2}$

$= frac{8}{5} - frac{9}{10} + 0.45 times ( frac{1 times 2 + 1}{2} )$

$= frac{16}{10} - frac{9}{10} + 0.45 times ( frac{1 times 2 + 1}{2} )$

$= frac{16 - 9}{10} + 0.45 times ( frac{1 times 2 + 1}{2} )$

$= frac{7}{10} + 0.45 times ( frac{1 times 2 + 1}{2} )$

$= frac{7}{10} + 0.45 times ( frac{2 + 1}{2} )$

$= frac{7}{10} + 0.45 times ( frac{3}{2} )$

$= frac{7}{10} + frac{9}{20} times ( frac{3}{2} )$

$= frac{7}{10} + frac{9 times 3}{20 times 2}$

$= frac{7}{10} + frac{27}{40}$

$= frac{28}{40} + frac{27}{40}$

$= frac{28 + 27}{40}$

$= frac{55}{40}$

$= 1 frac{3}{8}$

$= 1.375$

Jawaban:

8/5 – 90% + 0,45 x 1 1/2

= 8/5 – 90/100 + 45/100 x 3/2

= 32/20 – 18/20 + 9/20 x 30/20

= (32 – 18 + 9 x 30)/20

= (32 – 18 + 270)/20

= (14 + 270)/20

= 284/20

= 142/10

= 71/5

= 14 1/5

= 14.2