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2.5x-9+x+x+1.5x=99
We simplify the equation to the form, which is simple to understand
2.5x-9+x+x+1.5x=99
We move all terms containing x to the left and all other terms to the right.
+2.5x+1x+1x+1.5x=+99+9
We simplify left and right side of the equation.
+6x=+108
We divide both sides of the equation by 6 to get x.
x=18
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