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NAOMIN

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Feb 14, 2020
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Can someone please explain how (A1*B1)-(A1*B1*0.93)+(A1*C1) is reduced to A1*(0.07*B1+C1)?

Thanks!
 
(A1*B1)-(A1*B1*0.93)+(A1*C1)

(1 - 0.93)(A1*B1) + (A1*C1)

0.07 (A1*B1) + (A1*C1)

A1*0.07*B1 + A1*C1

A1 * (0.07 B1 + C1)
 
Romsek beat me to it, but they factored it.

[MATH](A1*B1)-(A1*B1*0.93)+(A1*C1)[/MATH]
Take A1 out of all expressions:

[MATH]A1(B1)-A1(B1*0.93)+A1(C1)[/MATH]
[MATH]2A1-A1=A1[/MATH], and [MATH]B1-B1(0.93)=0.07*B1[/MATH], so

[MATH]A1(0.07*B1+C1)[/MATH]
 
Romsek beat me to it, but they factored it.

[MATH](A1*B1)-(A1*B1*0.93)+(A1*C1)[/MATH]
Take A1 out of all expressions:

[MATH]A1(B1)-A1(B1*0.93)+A1(C1)[/MATH]
[MATH]2A1-A1=A1[/MATH], and [MATH]B1-B1(0.93)=0.07*B1[/MATH], so

[MATH]A1(0.07*B1+C1)[/MATH]
Thank you both, and Firemath's walkthrough brought me back to my 9th grade lessons. Thanks!
 
Romsek beat me to it, but they factored it.

[MATH](A1*B1)-(A1*B1*0.93)+(A1*C1)[/MATH]
Take A1 out of all expressions:

[MATH]A1(B1)-A1(B1*0.93)+A1(C1)[/MATH]
[MATH]2A1-A1=A1[/MATH], and [MATH]B1-B1(0.93)=0.07*B1[/MATH], so

[MATH]A1(0.07*B1+C1)[/MATH]
[MATH]2A1-A1=A1[/MATH], and [MATH]B1-B1(0.93)=0.07*B1[/MATH], so

This is correct but why is it needed for this problem?
 
Subhotosh, if your question is for me, it’s that I had a series of odd calculations to do on a purchasing s.s. that involved percentages for one number in a series, not for another, returning the resulting formula, and although it showed the logical path through the calculations, clearly could be simplified. It was just out of curiosity.
 
Subhotosh, if your question is for me, it’s that I had a series of odd calculations to do on a purchasing s.s. that involved percentages for one number in a series, not for another, returning the resulting formula, and although it showed the logical path through the calculations, clearly could be simplified. It was just out of curiosity.
The question was related to firemath's response
 
I did it so [MATH]-A1[/MATH] would not be a coefficient.
Please show me - where you had used

2A1−A1=A1

In your calculation? Your response (#3)/calculations:

Romsek beat me to it, but they factored it.​
(A1∗B1) − (A1∗B1∗0.93) +(A1∗C1)​
Take A1 out of all expressions:​
A1(B1)−A1(B1∗0.93)+A1(C1)​
2A1−A1=A1, and​
B1−B1(0.93)=0.07∗B1, so​
A1(0.07∗B1+C1)​
 
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