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4x-(9x-13)=3
We simplify the equation to the form, which is simple to understand
4x-(9x-13)=3
Remove unnecessary parentheses
4x-9x+13=3
We move all terms containing x to the left and all other terms to the right.
+4x-9x=+3-13
We simplify left and right side of the equation.
-5x=-10
We divide both sides of the equation by -5 to get x.
x=2
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