72=4.2z

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Solution for 72=4.2z equation: 



72=4.2z

We move all terms to the left:

72-(4.2z)=0

We add all the numbers together, and all the variables

-(+4.2z)+72=0

We get rid of parentheses

-4.2z+72=0

We move all terms containing z to the left, all other terms to the right

-4.2z=-72

z=-72/-4.2

z=17+0.59999999999999/4.2

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