4x-5=12-21x

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Solution for 4x-5=12-21x equation: 



4x-5=12-21x

We move all terms to the left:

4x-5-(12-21x)=0

We add all the numbers together, and all the variables

4x-(-21x+12)-5=0

We get rid of parentheses

4x+21x-12-5=0

We add all the numbers together, and all the variables

25x-17=0

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

25x=17

x=17/25

x=17/25

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