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Mathematics 9 Online
OpenStudy (anonymous):

solve: |3x-2| +4=7

OpenStudy (anonymous):

i) x>3/2 => 3x-2+4=7 x =5/3 ii) x<3/2 => -(3x-2)+4=7 -3x=1 x=-1/3

OpenStudy (anonymous):

3x -2 +4=7 3x=7-4+2 3x/3=5/3 x=5/3

OpenStudy (anonymous):

thanks @Famous-1jinx

OpenStudy (anonymous):

famous is wrong!!!! you should split it dependent on condition of absoulute value!!!!

OpenStudy (anonymous):

are you sure leeyoung?

OpenStudy (anonymous):

actually i typed it in and it came out right @LeeYeongKyu

OpenStudy (anonymous):

so leeyoung's answer is right in this case?

OpenStudy (anonymous):

famous . you must think about the varing x

OpenStudy (anonymous):

|dw:1347504738658:dw| if x is greater than 2/3 than y value is positive but less then 2/3 y value is negative. so you must think about the y>0 and y<0

OpenStudy (anonymous):

famous , your answer is confined when x>3/2. undertand?

OpenStudy (anonymous):

no @Famous answer was right

OpenStudy (anonymous):

never !! if you do that maybe you wrong

OpenStudy (anonymous):

but the online test said it was right @LeeYeongKyu

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