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what is this answer please 

 Mar 17, 2021
 #1
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0

4x+12+6x+8=90

10x+20=90

10x=70

x=7

 

plug in

 

4*7+12=28+12=$\boxed{40}$

 Mar 17, 2021
 #2
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+1

the answer is C

 Mar 17, 2021

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