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Mathematics 7 Online
OpenStudy (anonymous):

(x+20)/2=3x

OpenStudy (karatechopper):

multiply 2 on both sides

OpenStudy (karatechopper):

x+20=6x

OpenStudy (karatechopper):

subtract x on both sides

OpenStudy (karatechopper):

20=5x

OpenStudy (anonymous):

(x+20)/2 = 3x cross multiply x+20 = 6x 6x - x = 20 5x = 20 x = 20/5 x = 4

OpenStudy (karatechopper):

divide by 5 on both sides

OpenStudy (karatechopper):

x=4

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