Question

4,2:(2,25-1 целую 7/8*3целых1/3)

Answer 1

4,2:(2,25-15/8*10/3)=4,2:(2,25-25/4)=4,2:(2,25-6,25)=4,2:(-4)=-1,05

Answer 2

$4.2 \div (2.25 - 1 \frac{7}{8} \times 3 \frac{1}{3} ) = \\ = 4.2 \div (2 \frac{1}{4} - \frac{15}{8} \times \frac{10}{3} ) = \\ = 4 \frac{1}{5} \div ( \frac{9}{4} - \frac{5 \times 5}{4} ) = \\ = - \frac{21}{5} \times \frac{1}{4} = - \frac{21}{20} = \\ = - 1 \frac{1}{20} = - 1.05$