Решите уравнения! (1 2/7x-1/3)*21=2

[latex] \frac{9*21}{3} x - \frac{21}{3} = 2 [/latex] 27x-7=2 27x=2+7 27x=9 x=[latex] \frac{1}{3} [/latex]

(9/7x-1/3)*21=2 27x-7=2 27x=9 x=1/3