Question

корни уравнения х+2/7=7 2/7

Answer 1

х+2/7=51/7
х=51/7-2/7
х=49/7
х=7

Answer 2

$displaystyle x+ frac{2}{7} =7 frac{2}{7} \\x=7 frac{2}{7} - frac{2}{7} \\x=7$