3x+21=x+(1-3x)

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Solution for 3x+21=x+(1-3x) equation:



3x+21=x+(1-3x)
We move all terms to the left:
3x+21-(x+(1-3x))=0
We add all the numbers together, and all the variables
3x-(x+(-3x+1))+21=0
We calculate terms in parentheses: -(x+(-3x+1)), so:
x+(-3x+1)
We get rid of parentheses
x-3x+1
We add all the numbers together, and all the variables
-2x+1
Back to the equation:
-(-2x+1)
We get rid of parentheses
3x+2x-1+21=0
We add all the numbers together, and all the variables
5x+20=0
We move all terms containing x to the left, all other terms to the right
5x=-20
x=-20/5
x=-4

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