x+3x+12=20

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Solution for x+3x+12=20 equation:


x+3x+12=20

We simplify the equation to the form, which is simple to understand 
x+3x+12=20

We move all terms containing x to the left and all other terms to the right. 
+1x+3x=+20-12

We simplify left and right side of the equation. 
+4x=+8

We divide both sides of the equation by 4 to get x. 
x=2

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