7x+21+3x=4

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Solution for 7x+21+3x=4 equation: 



7x+21+3x=4

We move all terms to the left:

7x+21+3x-(4)=0

We add all the numbers together, and all the variables

10x+17=0

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

10x=-17

x=-17/10

x=-1+7/10

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