Question

как решить 4) пжл помогите

Answer 1

$\frac{7}{4} \frac{24}{100} = \frac{7 \times 6}{4\times 25} = \frac{42}{100} = 0.42 \\ 1 \times \frac{3}{4} \times 0.24 = 0.24 + 0.24 \times 3 \div 4 =0.24 + 0.06 \times 3 = 0.42$