Question

How do i solve for x in..... 8^3x-9=4^10x-7

Answer 1

isolate x on one side and put everything else on other side.......

Answer 2

8^3x=4^10x+2

Answer 3

512x=10000x+2
-9488x=2
x=-2/9488

Answer 4

3x-9 and 10x-7 are exponents of 8 and 4 respectively.. my answer book is saying the answer is wrong so im just trying to find the problem

Answer 5

ohh...okay sorry

Answer 6

do you have another answer?

Answer 7

nope sorry

Answer 8

is it
\(\huge 8^{3x-9}=4^{10x-7}\)
?

Answer 9

if yes, you can write that as
\(\huge 2^{3(3x-9)}=2^{2(10x-7)}\)
then equate the exponents to get
3(3x-9)=2(10x-7)
solve for x now.