What equation represents the following real-world problem? Cheyenne climbs 468 feet up a mountain. This is 129 feet more than her brother climbs. How high did Cheyenne’s brother climb up the mountain?
x + 129 = 468
x + 468 = 129
x − 468 = 129
x - 129 = 468
x = height climbed by Cheyenne's brother
x + 129 = height climbed by Cheyenne
Therefore, the equation representing the problem is:
x + 129 = 468