2x+7=21-5x

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Solution for 2x+7=21-5x equation:



2x+7=21-5x
We move all terms to the left:
2x+7-(21-5x)=0
We add all the numbers together, and all the variables
2x-(-5x+21)+7=0
We get rid of parentheses
2x+5x-21+7=0
We add all the numbers together, and all the variables
7x-14=0
We move all terms containing x to the left, all other terms to the right
7x=14
x=14/7
x=2

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