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2x+9x-(4x+8)=0
We simplify the equation to the form, which is simple to understand
2x+9x-(4x+8)=0
Remove unnecessary parentheses
2x+9x-4x-8=0
We move all terms containing x to the left and all other terms to the right.
+2x+9x-4x=0+8
We simplify left and right side of the equation.
+7x=+8
We divide both sides of the equation by 7 to get x.
x=1.14285714286
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