1.
Do you have any questions about the video?
2.
6 = a/4 + 2
Correct Answer
D. A = 16
Explanation
In the given equation, we have 6 on one side and a variable a divided by 4 plus 2 on the other side. To solve for a, we need to isolate it on one side of the equation. By subtracting 2 from both sides of the equation, we get a/4 = 4. Then, by multiplying both sides of the equation by 4, we find that a = 16.
3.
9x − 7 = −7
Correct Answer
A. X = 0
Explanation
The equation states that 9 times x minus 7 is equal to -7. To solve for x, we need to isolate it on one side of the equation. Adding 7 to both sides, we get 9x = 0. Finally, dividing both sides by 9, we find that x is equal to 0.
4.
0 = 4 + n/5
Correct Answer
A. N = -20
Explanation
By substituting -20 into the equation, we can verify if it satisfies the equation. Plugging in -20 for n, we get 0 = 4 + (-20/5), which simplifies to 0 = 4 - 4, giving us 0 = 0. Since the equation is true, n = -20 is the correct answer.
5.
−1 = 5 + x/6
Correct Answer
B. X = -36
Explanation
The equation given is −1 = 5 + x/6. To solve for x, we need to isolate it on one side of the equation. We can start by subtracting 5 from both sides, which gives us -6 = x/6. To further isolate x, we can multiply both sides by 6, resulting in -36 = x. Therefore, the correct answer is x = -36.
6.
−9x + 1 = −80
Correct Answer
C. X = 9
Explanation
The equation -9x + 1 = -80 can be solved by isolating the variable x. By subtracting 1 from both sides of the equation, we get -9x = -81. Dividing both sides by -9, we find that x = 9.
7.
−10 = −10 + 7m
Correct Answer
B. M = 0
Explanation
The equation given is −10 = −10 + 7m. To solve for m, we need to isolate the variable. By subtracting -10 from both sides of the equation, we get 0 = 7m. Dividing both sides by 7, we find that m = 0.
8.
144 = −12x - 60
Correct Answer
D. X = -17
Explanation
The given equation is 144 = -12x - 60. To solve for x, we need to isolate the variable. By adding 60 to both sides of the equation, we get 204 = -12x. Dividing both sides by -12, we find that x = -17.
9.
8n + 7 = 31
Correct Answer
D. N = 3
Explanation
To solve the equation 8n + 7 = 31, we need to isolate the variable n. First, we subtract 7 from both sides of the equation to get 8n = 24. Then, we divide both sides by 8 to solve for n, which gives us n = 3. Therefore, the correct answer is n = 3.
10.
M/9 − 1 = −2
Correct Answer
D. M = -9
Explanation
The given equation m/9 - 1 = -2 can be solved by isolating the variable m. By adding 1 to both sides of the equation, we get m/9 = -1. Then, multiplying both sides by 9, we find that m = -9.