SOLUTION: what is the answer to (x+21)+(2x+9)=90

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Question 263806: what is the answer to (x+21)+(2x+9)=90
Answer by mananth(16946) About Me  (Show Source):
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what is the answer to (x+21)+(2x+9)=90
x+21 +2x +9 =90
3x= 90 - 9-21
3x=60
x=60/3
x=20