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 Sep 26, 2019
edited by SoulSlayer615  Oct 23, 2019
 #1
avatar+104962 
+4

4b + 19         76

______  =  _____    cross-multiply

6b + 11        100

 

100(4b + 19)  = 76(6b + 11)     simplify

 

400b + 1900  = 456b + 836       subtract 400b, 836 from both sides

 

56b  = 1064      divide both sides by 56

 

b  = 19

 

Check

 

4(19) + 19             95           19

_________   =   _____  =   ___  =   0.76

6(19) + 11            125          25

 

 

 

cool cool cool

 Sep 26, 2019
 #2
avatar+974 
+2

4b+19 / 6b+11 = 76/100

\(\frac{4b+19}{6b+11} = \frac{76}{100}\)

\(400b+1900=456b+836\) by cross-multiplication

\(1064=56b, b = 19\)

 

You are very welcome!

:P

 Sep 28, 2019

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