Question

помогите у меня СОР ​

Answer 1

Ответ:

$1) \: 2 \times ( - 25) = - 50 \\ 0 \div ( - 6 \frac{5}{8} ) = 0 \\ ( - \frac{3}{4} ) \div ( - 1 \frac{1}{2} ) = \frac{3}{4} \times \frac{3}{2} = \frac{3}{4} \times \frac{2}{3} = \frac{1}{2}$

$2) \: ( - 25) \times 3 \times 2 = - 50 \times 3 = - 150 \\ - \frac{5}{9} \times ( - 11) \times 1 \frac{4}{5} = \frac{5}{9} \times 11 \times \frac{9}{5} = 11$

$3) \: \frac{5}{9} = 0.(5) \\ 1 \frac{1}{3} = \frac{4}{3} = 1.(3) \\ - 7 \frac{11}{45} = - 7.2(4)$

4) x×(-7)+15.7= -11.6

x×(-7)= -11.6-15.7

x×(-7)= -27.3

x= -27.3÷(-7)

x= 3.9