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23-03-2016
Mathematics

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SmarticalParticals SmarticalParticals

23-03-2016

First distribute the 1/5 through the parentheses.

1/5 (3 + 2z) - 4z = -3
3/5 + 2/5z - 4z = -3

subtract 3/5 from each side

2/5z - 4z = -3 - 3/5

combine like terms

-3 3/5z = - 3 3/5

z = 1

Answer A

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