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x + 2 + 3x + 1 =0
We simplify the equation to the form, which is simple to understand
x+2+3x+1=0
We move all terms containing x to the left and all other terms to the right.
+1x+3x=0-2-1
We simplify left and right side of the equation.
+4x=-3
We divide both sides of the equation by 4 to get x.
x=-0.75
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