ПОМОГИТЕ ПОЖАЛУЙСТА!1)-6,2*3,4=2)-6 3/4*(-1 11/45)=3)-19,68:(-0,8)=4)16,32:(-16)=. Created by sona645. matematika-ru

45)=3)-19,68:(-0,8)=4)16,32:(-16)=...

sona645 @sona645

July 2022 1 9 Report

ПОМОГИТЕ ПОЖАЛУЙСТА!
1)-6,2*3,4=
2)-6 3/4*(-1 11/45)=
3)-19,68:(-0,8)=
4)16,32:(-16)=

Answers & Comments

LiYeonSoo

$1)6.2 \times 3.4 = - \frac {2108}{100} = - \frac{527 \times 4}{25 \times 4} = - 21 \frac{2}{5} = - 21.08$

$2) - 6 \frac{3}{4} \times (1 \frac{11}{45} ) = - \frac{27}{4} \times - \frac{56}{45} = \frac{27 \times 56}{4 \times 45} = \frac{1512}{180} = \frac{42 \times 36}{5 \times 36 } = 8 \frac{2}{5} = 8.4$

$3) - 19.68 \div ( - 0.8) = \frac{19680}{800} = \frac{123 \times 160}{5 \times 160 } = 24 \frac{3}{5} = 24.6$

$4)16.32 \div ( - 16) = - \frac{1632}{1600} = - \frac{51 \times 32}{50 \times 32} = - 1 \frac{1}{50} = - 1.0 2$

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