Предмет: Математика, автор: dosik3802

помогите пожалуйста

Приложения:

tdiarov45: 1)4,8 - ( - 1,9) = 4,8 + 1,9 = 6,71)4,8−(−1,9)=4,8+1,9=6,7

2) - 1 \frac{5}{9} \times \frac{3}{7} = - \frac{14}{9} \times \frac{3}{7} = - \frac{2}{3}2)−1
9
5

×
7
3

=−
9
14

×
7
3

=−
3
2



3) - 1,4 \div 0,35 = - (1,4 \div 0,35) = - 43)−1,4÷0,35=−(1,4÷0,35)=−4

4)- 1 \frac{1}{8} \div ( - \frac{3}{4} ) = - \frac{9}{8} \div ( - \frac{3}{4 }) = \frac{9}{8} \times \frac{4}{3} = \frac{3}{2}−1
8
1

÷(−
4
3

)=−
8
9

÷(−
4
3

)=
8
9

×
3
4

=
2
3

Ответы

Автор ответа: amir36mm53
0

Ответ:

1)4,8 - ( - 1,9) = 4,8 + 1,9 = 6,7

2) - 1 \frac{5}{9}   \times  \frac{3}{7}  =  -  \frac{14}{9}   \times  \frac{3}{7}  =  -  \frac{2}{3}

3) - 1,4 \div 0,35 =  - (1,4 \div 0,35) =  - 4

4) - 1 \frac{1}{8}  \div ( -  \frac{3}{4} ) =  -  \frac{9}{8}  \div ( -  \frac{3}{4 }) =  \frac{9}{8}  \times  \frac{4}{3}  =  \frac{3}{2}


amir36mm53: Если что оброщайтесь помогу!
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