$$VERIFY.7/8+-1/7=-1/7+7/8.$$
$E=\frac{10}{FIRVY}$
$Y\neq 0\text{ and }F\neq 0\text{ and }I\neq 0\text{ and }R\neq 0\text{ and }V\neq 0$
$F=\frac{10}{EIRVY}$
$Y\neq 0\text{ and }I\neq 0\text{ and }R\neq 0\text{ and }E\neq 0\text{ and }V\neq 0$
$E=\frac{10}{FIRVY}$
$Y\neq 0\text{ and }F\neq 0\text{ and }R\neq 0\text{ and }V\neq 0\text{ and }I\neq 0$
$F=\frac{10}{EIRVY}$
$Y\neq 0\text{ and }R\neq 0\text{ and }V\neq 0\text{ and }E\neq 0\text{ and }I\neq 0$