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13-01-2018
Mathematics

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can someone do help with any of these please?

can someone do help with any of these please class=

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e1easegran e1easegran

13-01-2018

39.

|z+7|=12/3
|z+7|=4
z+7=4
-(z+7)=4
solve the first equation:
z+7=4
z=-3
solve the second equation:
-(z+7)=4
z=-11

z=-11,-3

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