Question

Bianca wrote the steps for her solution to the equation 2.3 + 8(1.3x – 4.75) = 629.9. She left out the description for the last step.
What is the missing step of her solution?

Add 10.4 to both sides.
Add negative 10.4 to both sides.
Multiply both sides of the equation by 10.4.
Divide both sides of the equation by 10.4.
Mark this and return

Answer 1

Answer:  Last Option is correct.

Step-by-step explanation:

Since we have given that

$2.3 + 8(1.3x-4.75) = 629.9$

We need to solve the above equation,

$2.3 + 8(1.3x-4.75) = 629.9\\\\2.3+10.4x-38=629.9\\\\-35.7+10.4x=629.9\\\\10.4x=629.9+35.7\\\\10.4x=665.6\\\\\text{ Dividing 10.4 on both sides}\\\\x=\frac{665.6}{10.4}\\\\x=64$

Hence, Divide both sides of the equation by 10.4.

Therefore, Last Option is correct.

Answer 2

I believe the correct answer from the choices listed above is the last option. THe missing step of her solution would be the statement "Divide both sides of the equation by 10.4." Hope this answers the question. Have a nice day.