Answer:
a= 13+3b
Step-by-step explanation:
Simplifying
a + -7 = 3(b + 2)
Reorder the terms:
-7 + a = 3(b + 2)
Reorder the terms:
-7 + a = 3(2 + b)
-7 + a = (2 * 3 + b * 3)
-7 + a = (6 + 3b)
Solving
-7 + a = 6 + 3b
Solving for variable 'a'.
Move all terms containing a to the left, all other terms to the right.
Add '7' to each side of the equation.
-7 + 7 + a = 6 + 7 + 3b
Combine like terms: -7 + 7 = 0
0 + a = 6 + 7 + 3b
a = 6 + 7 + 3b
Combine like terms: 6 + 7 = 13
a = 13 + 3b
Simplifying
a = 13 + 3b
1st place has 10 possible people
2nd place has 9 possible people
3rd place has 8 possible people
10 × 9 × 8 = 720
or you could use permutation (order matters)
10P3 = 720
nPr
Answer: b = -6
Step-by-step explanation: First add 10 to both sides to get -3b=18, then divide by -3 to get b = -6.
Hope this helped!
Please Mark Brainliest!
Ok so follow PEMDAS <span>
|3−10|−(12÷4+2)^2
</span>|-7|-(3+2)^2
7-(5)^2
7-25
-18
Answer:
6
Step-by-step explanation:
mulyiplying is for finding out the area
