Answer: (I am not a maths moderator)
x=4
Step-by-step explanation:
Multiply the exponents
(2x-4)^12=(4^2)^6 (exponents multiply so)
(2x-4)^12=4^12
4^12 = 16777216
(2x-4)^12= 16777216
Take the 1/12 exponent for both sides
that will remove the ^12 exponent from the left side and will take the 12th root for the right.
2x-4=4
add 4 to both sides
2x=8
divide both sides by 2
x=4
For number 4 you do x + 19 = 90
90 - 19 = 71 so x = 71
Answer:
27:9 divided by 3 on both sides,
9:3
27:9 divided by 9 on both sides,
3:1
HOPE THIS HELP
