21+5x=2(2x+21)

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Solution for 21+5x=2(2x+21) equation:



21+5x=2(2x+21)
We move all terms to the left:
21+5x-(2(2x+21))=0
We calculate terms in parentheses: -(2(2x+21)), so:
2(2x+21)
We multiply parentheses
4x+42
Back to the equation:
-(4x+42)
We get rid of parentheses
5x-4x-42+21=0
We add all the numbers together, and all the variables
x-21=0
We move all terms containing x to the left, all other terms to the right
x=21

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