Question

9 la puterea 43 - 9 la puterea 42 - 9 la puterea 41=71×3 la puterea x

Answer 1

$9^{42}$*9-$9^{42}$-$9^{41}$=
=$9^{42}$*8-$9^{41}$=$9^{41}$*72-$9^{41}$=
 =$9^{41}$*71⇒$3^{x}$=$9^{41}$⇒x=82