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multiplicative identity

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Factoring an interest formula 2020-09-29
From Kenneth:
Hello

P + Pr has a common factor of P so it can be expressed as P(1 + r) after the P is factored out.. How does the "P" get in front of (1 + r)?

P/P + Pr/P = 1 + r What step is used to show that P is added in front of (1 + r)?

I thank you for your reply.

Answered by Harley Weston.
 
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