Answer:
x = 7.33
Step-by-step explanation:
3x - 15 = 7
3x = 7 + 15
3x = 22
x = 7.33
Answer:
5x +2x+14 =14x-7
7x+14=14x-7
14+7=14x-7x
21 divide bye 7=7x divide bye 7
3=x
Step-by-step explanation:
Answer:
With base of 3: 
With base of 9: 
Step-by-step explanation:
Use 3 and 9 as the base of the power.

Answer:
No, you could write the formula different but not change it
Step-by-step explanation:
Answer:
10
Step-by-step explanation:
Hope it helps! :D