21x+4=7x+8

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Solution for 21x+4=7x+8 equation: 



21x+4=7x+8

We move all terms to the left:

21x+4-(7x+8)=0

We get rid of parentheses

21x-7x-8+4=0

We add all the numbers together, and all the variables

14x-4=0

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

14x=4

x=4/14

x=2/7

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