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30x=-10(x-4)
We simplify the equation to the form, which is simple to understand
30x=-10(x-4)
Reorder the terms in parentheses
30x=+(-10x+40)
Remove unnecessary parentheses
+30x=-10x+40
We move all terms containing x to the left and all other terms to the right.
+30x+10x=+40
We simplify left and right side of the equation.
+40x=+40
We divide both sides of the equation by 40 to get x.
x=1
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