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-6z 2 = 3z+ 4z+28

-6z+2 +3z = 3z+ 4z +28 +4z

-6z+4z+2 = 3z+ 28

-10z+2 -3z= 28 - 2

-10z + -3z = 26

-13z/13 = 26/-13

z = -2

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โˆ™ 2012-09-03 10:19:49
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Q: -6z plus 2 equals 3z plus 4z plus 28 How do you prove the answer -2 is correct?
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