How do you solve $-30n=-27n-63$ ?

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Answer 1 · 2016-06-22T13:34:24

$n=21$

$-30n=-27n-63$

Now adding $27n$ on both sides

$-30n+27n=-27n+27n-63$

or $-30n+27n=-cancel(27n)+cancel(27n)-63$

or $-3n=-63$

Now multiplying each side by $-1/3$ , multiplicative inverse of $-3$ coefficient of $n$ , we get

or $-3nxx-1/3=-63xx-1/3$

or $n=-63xx-1/3=-21cancel(63)xx-1/cancel3$

or $n=21$

How do you solve -30n=-27n-63-30n=-27n-63?