2 câu trả lời
Đáp án:
Giải thích các bước giải:
`\frac{-3}{5} × \frac{19}{24} × \frac{15}{19}`
`= \frac{(-3)xx19xx15}{5xx24xx19}`
`= \frac{-1xx1xx3}{1xx8xx1}`
`= \frac{-3}{8}`
$\dfrac{(-3)}{5}$ `xx` $\dfrac{19}{24}$ $\times$ $\dfrac{15}{19}$
$=$ ( $-$ $3$ ) $\times$ $19$ $\times$ $15$
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$5$ $\times$ $24$ $\times$ $19$
$=$ $-$$1$ $\times$ $1$ $\times$ $3$
-----------------------------------------
$1$ $\times$ $8$ $\times$ $1$
$=$ $\dfrac{-3}{8}$