There are 15 apples and pears, 20 peaches and apples, and 10 peaches and pears. How many apples, pears and peaches are there?

This problem can be worked out, but it doesn't conform to the reality. There is something wrong with it
Suppose the apple is x, the pear is y, and the peach is Z
X+Y=15
Z+X=20
Z+Y=10
Solution
X=12.5
Y=2.5
Z=7.5

Apple + pear + peach = 14 Apple + pear peach = 8 apple pear = 7 how many apples, pears and peaches are there?

Let apple be x, pear be y, peach be Z, then x + y + Z = 14, x + Y-Z = 8, X-Y = 7, then x = 9, y = 2, z = 3, that is, apple 9, pear 2, peach 3

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