7+28x=42+21

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Solution for 7+28x=42+21 equation: 



7+28x=42+21

We move all terms to the left:

7+28x-(42+21)=0

We add all the numbers together, and all the variables

28x+7-63=0

We add all the numbers together, and all the variables

28x-56=0

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

28x=56

x=56/28

x=2

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