Think of a number. Double the number. Add 200. Divide the answer by 4. Subtract one-half the original number. What is the value of the result?
Number = x
Double the number 2x
add 200 2x + 200
divide by 4 (2x+200)/4
Subtract 1/2 x (2x+200)/4 - 1/2 x
= 1/2x + 50 - 1/2 x = 50
Number = x
Double the number 2x
add 200 2x + 200
divide by 4 (2x+200)/4
Subtract 1/2 x (2x+200)/4 - 1/2 x
= 1/2x + 50 - 1/2 x = 50