A helicopter is 19 1/4 meters above the top of the canyon wall. It goes down 27 1/2 meters, passing into the canyon. What is the new position of the helicopter relative to the top of the canyon wall?

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20y5 times 2 is 1010 times -2 is -20, plus y

1. isolate the variable, in this case, d. subtract 35.5 on both sides of the equation.2. 52 subtracted by 35.5 is 16.53. therefore your answer would be d= 16.5this is the basics of pre algebra, isolating variable through adding, subtracting, multiplying, and dividing, if you have any other questions to ask just comment!