Answer:
7
Step-by-step explanation:
We use scientific notation when either the questions asks for it or when the number is really long or really short...
Answer:
x = 13
Step-by-step explanation:
- 3 (x + 4) + 15 = 16 - 4x
- 3x - 14 + 15 = 14 - 4x
- 3x + 4x = 14 + 14 - 15
x = 13
12 because if u had 3 groups of 4 that would be 3+3+3+3