Question

Five times a number is the same as 30 more than 8 times the number. Find the number.

If n is "the number," which equation could be used to solve for the number?
5 n = 8 n + 30
3 n = 30
5 n + 8 n = 30

Answer 1

The number is -10.

Explanation:

Let the "number" be x.

5x=8x+30

30=5x-8x

30=-3x

x=30/-3

x=-10

Answer 2

5n=8n+30, which is -10

Explanation:

so five times a number, so 5n is the same(or equal to) so 5n= ......30 more than 8 times the number(8n+30) so we get 5n=8n+30. solving this results in -3x=30, so x=-10