Question

Solve the two step equation to find the value of 30=-5d-5

a) d=−5
b )d=7
c) d=−6
d) d=5

Answer 1

To find the value of d in the equation 30 = -5d - 5, the steps involve adding 5 to both sides and then dividing by -5, resulting in d = -7.

Step-by-step explanation:

To solve the two-step equation 30 = -5d - 5, we must isolate the variable d on one side of the equation. Here are the steps to do this:

1. Add 5 to both sides of the equation to get rid of the -5 on the right side, giving us 30 + 5 = -5d, which simplifies to 35 = -5d.
2. Next, divide each side of the equation by -5 to solve for d. That gives us 35 / -5 = d, which simplifies to d = -7.

Therefore, the value of d in the equation 30 = -5d - 5 is -7, which corresponds to option b).