Solving One Step Equations - Multiplication And Division

Explanation
The equation 10n = 40 can be solved by dividing both sides of the equation by 10. This gives us n = 4, which is the solution to the equation. Therefore, the correct answer is 4.

Explanation
The equation -15x=0 represents a linear equation with one variable, x. In order to solve for x, we need to isolate it on one side of the equation. By dividing both sides of the equation by -15, we get x=0. Therefore, the solution to the equation is x=0.

Explanation
To solve the equation 21=-7n, we need to isolate the variable n. We can do this by dividing both sides of the equation by -7. By dividing 21 by -7, we get -3, which means that -3 is the value of n that satisfies the equation.

Explanation
The given equation v/7=8 can be solved by multiplying both sides of the equation by 7. This will eliminate the denominator on the left side, giving us v = 56. Therefore, the value of v that satisfies the equation is 56.

Explanation
The given equation -126=14k can be solved by isolating the variable k. To do this, we divide both sides of the equation by 14, which gives us k = -9. Therefore, the value of k that satisfies the equation is -9.

Explanation
The given equation states that -6 is equal to b divided by 18. To find the value of b, we can multiply both sides of the equation by 18 to isolate b. This gives us -6 multiplied by 18 equals b. Simplifying this expression, we get -108 equals b. Therefore, the value of b is -108.

Explanation
The given equation states that -5 is equal to a divided by 18. To find the value of a, we can multiply both sides of the equation by 18. This gives us -90 = a, meaning that a is equal to -90.