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.
Accepted Solution
A:
Answer:D. Divide both sides of the equation by 7.Step-by-step explanation:Given expression:[tex]7d=49[/tex]To determine the step used to isolate the variable in the above equation.Step:In order to isolate [tex]d[/tex] in the above equation we would divide both sides of the equation by [tex]7[/tex]. By doing this the [tex]7[/tex] on the left side would cancel out isolating [tex]d[/tex].The step is done as follows:[tex]7d=49[/tex]Dividing both sides of te equation by 7.[tex]\frac{7d}{7}=\frac{49}{7}[/tex]∴ [tex]d=7[/tex]