Question

1/10n-3/10=4/10 please help

Answer 1

n=7
1/10n-3/10=4/10
(add the -3/10 to the other side)
1/10n=7/10
(Than divide)
You get n=7

Answer 2

n=7

Explanation:

1/10n-3/10=4/10

1/10n-3/10+310=4/10+310

1/10n=7/10

10x1/10n=7x10/10

n=7

I hope this helps!