Question

find the value of x please help me

Answer 1

$(a \div b) {}^{x - 1} = (b \div a) {}^{x - 3}$

on reciprocating power will be negative

$(b \div a) {}^{1 - x} = (b \div a) {}^{x - 3}$

When bases are same compare powers

1 -x = x - 3

2x = 4

x = 2


Thanks