Question

You want to buy a new camera. The sale price is $129. The sign says that this is $45 less than the original cost. What is the original cost of the camera.

Answer 1

Sale=original-45
129=original-45
add 45 to both sides
174=original

the camera originally cost $174

Answer 2

To find the original price of the camera just add 45 to 129!
45+129=174
The camera originally costed $174.