Решите уравнение а) [latex] \frac{2}{7} [/latex]х+4=2

[latex] \frac{2}{7}x + 4 = 2 \\ \\ \frac{2}{7}x= 2-4 \\ \\ \frac{2}{7}x = -2 \\ \\ x= - 2 : \frac{2}{7} = - 2 * \frac{7}{2} = - \frac{2*7}{1*2} = - \frac{7}{1} \\ \\ x= -7 [/latex] проверим: [latex]\frac{2}{7}* (-7) + 4 = 2 \\ \\ - \frac{2*7}{7*1} + 4 =2 \\ \\ - 2 +4=2 \\ \\ 2=2 [/latex]