12z-15=21

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Solution for 12z-15=21 equation:



12z-15=21
We move all terms to the left:
12z-15-(21)=0
We add all the numbers together, and all the variables
12z-36=0
We move all terms containing z to the left, all other terms to the right
12z=36
z=36/12
z=3

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