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x*2+5x+3=9
We simplify the equation to the form, which is simple to understand
x*2+5x+3=9
Simplifying:
+2x+5x+3=9
We move all terms containing x to the left and all other terms to the right.
+2x+5x=+9-3
We simplify left and right side of the equation.
+7x=+6
We divide both sides of the equation by 7 to get x.
x=0.857142857143
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