Question

find the value of x:​

Answer 1

Base are same (-9) soo we can only write powers.
18✖️5=3x+2
90=3x+2
30=x+2
30-2=x
28 is the answer

Answer 2

(-9)^23=(-9)^3x+2

(-9)^23-2 =(-9)^3x

(-9)^21/3=(-9)^x.

(-9)^7=(-9)^x

-9 base common

so x=7

when base is same and the eqation is in mutiply power added