12x+x+3-4x=30

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Solution for 12x+x+3-4x=30 equation:


12x+x+3-4x=30

We simplify the equation to the form, which is simple to understand 
12x+x+3-4x=30

We move all terms containing x to the left and all other terms to the right. 
+12x+1x-4x=+30-3

We simplify left and right side of the equation. 
+9x=+27

We divide both sides of the equation by 9 to get x. 
x=3

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