5x+21=18

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Solution for 5x+21=18 equation: 



5x+21=18

We move all terms to the left:

5x+21-(18)=0

We add all the numbers together, and all the variables

5x+3=0

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

5x=-3

x=-3/5

x=-3/5

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