Question

(x+5/7)-1/3=1*2/7*2 помогите решить​

Answer 1

$(x + \frac{5}{7} ) - \frac{1}{3} = 1 \times \frac{2}{7} \times 2 \\ x + \frac{5}{7} - \frac{1}{3} = \frac{4}{7} \\ x + \frac{5}{7} - \frac{1}{3} - \frac{4}{7} = 0 \\ x + \frac{1}{7} - \frac{1}{3} = 0 \\ x + \frac{15}{21} - \frac{7}{21} = 0 \\ x + \frac{8}{21} = 0 \\ x = - \frac{8}{21}$