Answer: The answers are
- Subtract 7 from both sides of the equation.
- Subtract 7 from 7.
- Substitute 5 for p to check the solution.
Step-by-step explanation:
p + 7 = 12
= p + 7 - 7 = 12 - 7
= p = 5
Then for the substituting part
5 + 7 = 12
Hope this helps!
Neutral atoms must have equal numbers of protons and electrons
Solution: 18 electrons
56÷6.2 equals 9.032≈9 the answer is 9 $
12.5% of 360 is 45
360-45 is 315
Answer is £315
