400-3x=145

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Solution for 400-3x=145 equation:


400-3x=145

We simplify the equation to the form, which is simple to understand 
400-3x=145

We move all terms containing x to the left and all other terms to the right. 
-3x=+145-400

We simplify left and right side of the equation. 
-3x=-255

We divide both sides of the equation by -3 to get x. 
x=85

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