Question

(x+5/7)-1/3=1*2/7*2 помогите решить​

Answer 1

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