Question

Помогите пожалуйста
2/7 х+2/7 х=9/1

Answer 1

$\frac{2}{7} x+\frac{2}{7}x=\frac{9}{1} \\\frac{2x}{7} +\frac{2x}{7}=\frac{9}{1} \\\frac{4x}{7} =9\\4x=7*9\\x=\frac{63}{4} =15\frac{3}{4}$

Answer 2

$\frac{2}{7} x+\frac{2}{7} x=\frac{9}{1}\\\\\frac{2*1+2*1}{7}x=9\\\\\frac{4}{7}x = 9\\\\\frac{4x}{7} = 9\\\\4x=9*7\\4x=63\\x=63:4\\x=15.75$