Question

Вычислите 5,64:(-0,047) -4,2: (дробью) 3 целых 11 15

Answer 1

$5,64 : (-0,047)= - \frac{5,64 *1000}{0,047 *1000} = -\frac{5640}{47} =- 120 \\ \\ \\ -4,2 : 3 \frac{11}{15} = - \frac{42}{10} : \frac{56}{15} = - \frac{42*15}{10*56} = \\ \\ = -\frac{6*3}{2*8} = - \frac{3*3}{1*8} =- \frac{9}{8} = - 1 \frac{1}{8} = -1,125$