21x+4=15

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Solution for 21x+4=15 equation: 



21x+4=15

We move all terms to the left:

21x+4-(15)=0

We add all the numbers together, and all the variables

21x-11=0

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

21x=11

x=11/21

x=11/21

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