Answer:
x=4
Step-by-step explanation:
2^x-7=9
Add 7 to each side
2^x-7+7=9+7
2^x = 16
Change 16 to a power of 2 16 = 2^4
2^x = 2^4
The bases are the same, so the powers are the same
x=4
Answer:
Step-by-step explanation:
hello :
2^x-7=9
add 7 : 2^x =16
2^x = 2^4
x=4