Question

(-1 supra 10+ 2 supra 15)×(-7 intregi si 1 supra 2)+(-4)×(-7 supra 20+4 supra 15) dau coroana

Answer 1

Răspuns:

$(- \frac{ 1 }{ 10 } + \frac{ 2 }{ 15 } ) \times (- 7 \frac { 1 } { 2 } )+(-4) \times (- \frac{ 7 }{ 20 } + \frac{ 4 }{ 15 } )$

$\left(-\frac{3}{30}+\frac{4}{30}\right)\left(-\frac{7\times 2+1}{2}\right)-4\left(-\frac{7}{20}+\frac{4}{15}\right)$

$\frac{-3+4}{30}\left(-\frac{7\times 2+1}{2}\right)-4\left(-\frac{7}{20}+\frac{4}{15}\right)$

$\frac{1}{30}\left(-\frac{7\times 2+1}{2}\right)-4\left(-\frac{7}{20}+\frac{4}{15}\right)$

$\frac{1}{30}\left(-\frac{14+1}{2}\right)-4\left(-\frac{7}{20}+\frac{4}{15}\right)$

$\frac{1}{30}\left(-\frac{15}{2}\right)-4\left(-\frac{7}{20}+\frac{4}{15}\right)$

$\frac{1\left(-15\right)}{30\times 2}-4\left(-\frac{7}{20}+\frac{4}{15}\right)$

$\frac{-15}{60}-4\left(-\frac{7}{20}+\frac{4}{15}\right)$

$-\frac{1}{4}-4\left(-\frac{7}{20}+\frac{4}{15}\right)$

$-\frac{1}{4}-4\left(-\frac{21}{60}+\frac{16}{60}\right)$

$-\frac{1}{4}-4\times \left(\frac{-21+16}{60}\right)$

$-\frac{1}{4}-4\times \left(\frac{-5}{60}\right)$

$-\frac{1}{4}-4\left(-\frac{1}{12}\right)$

$-\frac{1}{4}+\frac{-4\left(-1\right)}{12}$

$-\frac{1}{4}+\frac{4}{12}$

$-\frac{1}{4}+\frac{1}{3}$

$-\frac{3}{12}+\frac{4}{12}$

$\frac{-3+4}{12}$

$\frac{1}{12}$

Descompunere în factori primi⬇️

$\frac{1}{2 ^ {2} \cdot 3} \approx 0.083333333$

fallow? 5☆