Question

If 42^2x-1=343^6 find x

Answer 1

(6×7)^2x-1=(7×7×7)^6

6^2x-1×7^2x-1=6^0×7^18

now,. 6^2x-1=6^0

2x-1=0

2x=1

x=1/2=0.5

or

7^2x-1=7^18

2x-1=18

2x=19

x=19/2

x=9.5