Your ultimate goal is to get the variable secluded all by itself. You'll have to use the opposite operation to do this and remember, what you do to one side, you have to do to the other.
1. 9s + 3 = 57
2. Subtract 3 from each side. This will result in 9s = 54
3. To undo the multiplication of 9s you'll divide both sides by 9. 9s/9 = 54/9
4. The ending result is: s=6
5. Go back and check your work by substituting it in your original equation.
Its true you are doing it to both side. If you only one side, then the inequality would not be true. Subtract is like adding the negative . number, so you still would have to do it to both side of the inequality so the inequality is true,
Answer:
Michael (m) practiced 7 hours and Gen (g) practiced 5
Step-by-step explanation:
g+m+2=12
-2 -2
g+m=10
10 divided by 2 is 5
They both practiced free throws for 5 hours. Michael practiced two hours more that Gen. 5+2=7. Therefore, Michael (m) practiced 7 hours and Gen (g) practiced 5.
21 divided by 3 is 7.
So, that'll result in 7 people in each van.
