7x+21+3x=7

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



7x+21+3x=7

We move all terms to the left:

7x+21+3x-(7)=0

We add all the numbers together, and all the variables

10x+14=0

We move all terms containing x to the left, all other terms to the right

10x=-14

x=-14/10

x=-1+2/5

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