5x+21=30

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Solution for 5x+21=30 equation: 



5x+21=30

We move all terms to the left:

5x+21-(30)=0

We add all the numbers together, and all the variables

5x-9=0

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

5x=9

x=9/5

x=1+4/5

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