Please tell how we will do it Q . 81 - 2 ÷ 729 1 - x = 9 2 x W h a t i s t h e v a l u e o f x . Share with your friends Share 0 Shruti Tyagi answered this Dear student, We have,81-2÷7291-x=92x⇒92-2÷931-x=92x⇒9-4÷93-3x=92x ...[using amn=am×n]⇒9-4-3-3x=92x ...[using am÷an==m-n]⇒9-4-3+3x=92x⇒9-7+3x=92xSince bases are same comparing exponentswe get, -7+3x=2x⇒-7=2x-3x⇒-7=-x⇒x=7 ...[by cancelling -ve from both sides]Thus the value of x is 7 Regards 0 View Full Answer Aheli answered this ..* 0