3=(2x-1)+2x=21

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Solution for 3=(2x-1)+2x=21 equation:



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

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