If two numbers have a sum of 28, and we call one number P, then the other number is 28 - P. Why?
Take their sum
P + (28 - P) = 28 + (P - P) by the Associative Property
= 28 + 0 = 28, which is what the problem originally stated
Morgan W.
asked • 10/06/16two number have a sum of 28. If one number is P, express the other number in terms of p
two numbers have a sum of 28. If one number is P, express the other number in terms of p
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