A student is asked to find the solution to this equation. 23 – 6 = 12
The student's work is shown.
2x – 6 = 12 + 6
18
2
=
The student's equation is
equation because it is
V
One way we know this is that the sum of 12 and 6 is
to 9.

You’re repairing a large rectangular aquarium. the final step is to cover the glass with a protective film. the front and back of the aquarium measure 4 meters by 2 meters, and the sides of the aquarium measure 3 meters by 2 meters. how many square meters of protective film do you need? ( )

You have 6 dollars +12 pennies +to quarters + 4 dimes=2 nickels how much do you have

What is the base of 1/9 to the power of 2