Tolong bantu yha kak​

By Posted on

Tolong bantu yha kak​

Tolong bantu yha kak​

Penjelasan dengan langkah-langkah:

a. 3/8–1/4=3/8–2/8

=1/8

b. 7/30+3/20–4 1/4=7/30+3/20–17/4

=14/60+9/60–255/60

=–232/60

Jawaban:

a.

frac{1}{8}

B.

- frac{58}{15}

Penjelasan dengan langkah-langkah:

a.

frac{3}{8} - frac{1}{4} = frac{3 times 1}{8 times 1} - frac{1 times 2}{4 times 2} \ = frac{3}{8} - frac{2}{8} \ = frac{1}{8}

B.

frac{7}{30} + frac{3}{20} - 4 frac{1}{4} = frac{7}{30 } + frac{3}{20} - frac{17}{4} \ = frac{7 times 2}{30 times 2} + frac{3 times 3}{20 times 3} - frac{17 times 15}{4 times 15} \ = frac{14 + 9 -255 }{60} \ = - frac{232}{60} \ = - frac{58}{15}