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six is subtracted from a number. The result is divided by four. this result is added to 10 to give 30. what is the number? 

a. 4       b. 80     c.86       d.16

bagel  Dec 8, 2017
 #1
avatar+88871 
+2

(N - 6) / 4  +  10  =  30    subtract 10 from both sides

 

(N - 6) / 4   =  20            multiply both sides by 4

 

N - 6    =   80                 add 6 to both sides

 

N  =  86

 

 

 

cool cool cool

CPhill  Dec 8, 2017

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