Tilda writes the equation 5y=20x+8 . She wants to rewrite the equation in terms of x . After subtracting 8 from both sides of the equation, what number should she divide both sides of the equation by in order to accomplish this goal?

1 answer

To rewrite the equation \( 5y = 20x + 8 \) in terms of \( x \), Tilda first subtracts 8 from both sides:

\[ 5y - 8 = 20x \]

Next, to isolate \( x \), she needs to divide both sides of the equation by 20. This will give her \( x \) alone on one side:

\[ x = \frac{5y - 8}{20} \]

So, the number she should divide both sides of the equation by is 20.