30+n=2(10+n)

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Solution for 30+n=2(10+n) equation:


30+n=2(10+n)

We simplify the equation to the form, which is simple to understand
30+n=2(10+n)

Reorder the terms in parentheses
30+n=+(+20+2n)

Remove unnecessary parentheses
+30+n=+20+2n

We move all terms containing n to the left and all other terms to the right.
+1n-2n=+20-30

We simplify left and right side of the equation.
-1n=-10

We divide both sides of the equation by -1 to get n.
n=10

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