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1.Calculate:

A-B=725

A/B=37,5

A=?

B=?

  1. No decimals
  2. With how to solve
 Dec 10, 2015
 #1
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0

I forgot to say do it like your in fifth grade its for my brother 

 Dec 10, 2015
 #2
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You do your brothers homework for him?

 Dec 10, 2015
 #3
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How are we supposed to do it like we're in 5th grade if we're not in 5th grade? I'm in 8th so it is really sad that I didn't understand the problem at all. 

 Dec 10, 2015
 #4
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0

1.Calculate:

A-B=725, A/B=37,5

A/B=37,5

A=?

B=?

No decimals

With how to solve

 

A - B=725

A=725 + B, but we have,

(725+B)/B=37.5 cross multiply

725+B=37.5B isolate B to one side

725=37.5B-B

725=36.5B divide both sides by 36.5

B=725/36.5

B=1450/73 and

A=54,375/73. YOUR ANSWER IS IN FRACTIONS, WHICH YOU CAN TURN INTO DECIMALS.

 Dec 10, 2015
 #5
avatar+2498 
0

A-B=725

A/B=37.5         A=37.5B

 

37.5B-B=725

36.5B=725

B=1450/73 or 19.863013698630137

A=37.5B=744.8630136986301375

 

i think it need to be like that

 Dec 10, 2015
 #6
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I have never learned what / means if it is common core no wonder I go to a school where they don't do that.

 Dec 10, 2015
 #7
avatar+128089 
+5

A - B  = 725      (1)

 

A/B = 37.5    →   A  = 37.5B    (2)

 

Substitute (2)   into (1)

 

37.5B - B  = 725

 

36.5B  = 725        divide  both sides by 36.5

 

B = 1450/73

 

A = 37.5 (1450/73)  = 54375/73

 

 

cool cool cool

 Dec 10, 2015
 #8
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0

Apperently i do his homework and thanks

 Dec 10, 2015

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