21+4x=7

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Solution for 21+4x=7 equation: 



21+4x=7

We move all terms to the left:

21+4x-(7)=0

We add all the numbers together, and all the variables

4x+14=0

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

4x=-14

x=-14/4

x=-3+1/2

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