She is a quarter of the mountain, which is 125 meters. 125 x 4 is 500. the ledge is 425 feet down the mountain. 500 - 425 is 75. When she reaches the ledge, she will be 75 meters above ground.
Answer:
-6*-2*2 = 24
-3*2*1 = -6
Once you found the answer inside both the parenthesis, you need to add them
24+-6
= 24-6
= 18