Question

X-7 x-11 x-10
___ - ___ + ___ =2
5 6 7

Answer 1

$\frac{x - 7}{5} - \frac{x - 11}{6} + \frac{x - 10}{7} = 2 \\ \frac{6x - 42 - 5x + 55}{30} + \frac{x - 10}{7} = 2 \\ \frac{x + 13}{30} + \frac{x - 10}{7} = 2 \\ \frac{7x + 91 + 30x - 300}{210} = 2 \\ 37x - 209= 420 \\ 37x = 629\\ x = 17$