42-21x=-105

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Solution for 42-21x=-105 equation:


42-21x=-105

We simplify the equation to the form, which is simple to understand 
42-21x=-105

We move all terms containing x to the left and all other terms to the right. 
-21x=-105-42

We simplify left and right side of the equation. 
-21x=-147

We divide both sides of the equation by -21 to get x. 
x=7

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