Question

помогите с сором пожалуйста​

Answer 1

1.a)

2.

$( - 2.5 + 2 \frac{1}{3} ) \times ( -5 \frac{1}{7} ) \div 1 \frac{1}{3} = \\ ( - 2 \frac{1}{2} + 2 \frac{1}{3} ) \times ( - 5 \frac{1}{7} ) \div 1 \frac{1}{3} = \\ - \frac{1}{6 } \times ( - \frac{36}{7} ) \div \frac{4}{3} = \\ \frac{6}{7} \times \frac{3}{4} = \frac{18}{28} = \frac{9}{14}$

4. (a+b)×c=a×c+b×c

a=0.3 b=-0.2 c=-0.8

(a+b)×c=(0.3+(-0.2))×(-0.8)=(0.3-0.2)×(-0.8)=0.1×(-0.8)=-0.08

a×c+b×c=0.3×(-0.8)+((-0.2)×(-0.8))=(-0.24)+0.16=-0.08

5.

$(x -( - 0.6)) \times 1.4 =8.4 \\ x + 0.6 = 6 \\ x = 6 - 0.6 \\ x = 5.4$