Question

Which step should be taken to isolate the variable in the following equation? LaTeX: 7d\:=\:497 d = 49 Group of answer choices A. Add 7 to both sides of the equation B. Subtract 7 from both sides of the equation C. Multiply both sides of the equation by 7. D. Divide both sides of the equation by 7.

Answer 1

D. Divide both sides of the equation by 7.

Explanation:

Given expression:

`7d=49`

To determine the step used to isolate the variable in the above equation.

Step:

In order to isolate
`d` in the above equation we would divide both sides of the equation by
`7`. By doing this the
`7` on the left side would cancel out isolating
`d`.

The step is done as follows:

`7d=49`

Dividing both sides of te equation by 7.

`(7d)/(7)=(49)/(7)`

∴
`d=7`