In a subtraction formula, the sum of the subtracted, subtracted and difference results in 34.6. If the difference is 2.6, what is the subtraction?

Let x, y, Z respectively
x+y+z=34.6
z= 2.6
x-y=z
Find y, right. Replace the third with the first
z+y + y +z =34.6
Finding y directly when Z is known

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