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Jessica Jung ❤️
x+2x-12=0
2
A
x+2x=12
2
C=( ) = ( )= 1
b 2
a 2
__ _
2
2
x+2x+1=12+1
2
(x+1)=13
2
(x+1)= 13
2



(x+1)=+ 13
-
x+1= 13
x= 13-1
x+1=- 13
x= -13-1



