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To solve the equation P - 10 = 13 using substitution, we can substitute the value of P with 13, making the equation true:
P - 10 = 13
Substitute P with 13:
13 - 10 = 13
Simplify:
3 = 13
However, this equation is not true. This means that there is no solution to the equation P - 10 = 13.