7-x=28

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Solution for 7-x=28 equation:


7-x=28

We simplify the equation to the form, which is simple to understand 
7-x=28

We move all terms containing x to the left and all other terms to the right. 
-1x=+28-7

We simplify left and right side of the equation. 
-1x=+21

We divide both sides of the equation by -1 to get x. 
x=-21

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