3x+7=21-5x

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Solution for 3x+7=21-5x equation:



3x+7=21-5x
We move all terms to the left:
3x+7-(21-5x)=0
We add all the numbers together, and all the variables
3x-(-5x+21)+7=0
We get rid of parentheses
3x+5x-21+7=0
We add all the numbers together, and all the variables
8x-14=0
We move all terms containing x to the left, all other terms to the right
8x=14
x=14/8
x=1+3/4

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