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

Answer:

D. Divide both sides of the equation by 7.

Step-by-step 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.

$\frac{7d}{7}=\frac{49}{7}$

∴ $d=7$