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4x-3(2x+5)=30
We simplify the equation to the form, which is simple to understand
4x-3(2x+5)=30
Reorder the terms in parentheses
4x+(-6x-15)=30
Remove unnecessary parentheses
+4x-6x-15=+30
We move all terms containing x to the left and all other terms to the right.
+4x-6x=+30+15
We simplify left and right side of the equation.
-2x=+45
We divide both sides of the equation by -2 to get x.
x=-22.5
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