Question

Someone please help. I can’t figure this out: (m+18)/m=5/2

Answer 1

m = 12

Explanation:

`(m+18)/(m)`=
`(5)/(2)`

2(m+18) = 5(m)

2m + 36 = 5m

2m - 5m = -36

-3m = -36

m = 12

Answer 2

Explanation:

(m + 18) / m = 5/2

Do you know what cross multiplication is for a proportion? It means that you take the top of one fraction and multiply it by the bottom of the other fraction.

So for this question

5 (top right) * m (bottom left)

and put an equal sign

5*m =

Now take the top left and multiply by the bottom right.

2 * (m + 18)

Now equate the two results.

5m = 2*(m + 18) Remove the brackets.

5*m = 2*m + 2*18 Combine the right.

5m = 2m + 36 Subtract 2m from both sides.

5m-2m=2m-2m+36 Combine

3m = 36 Divide both sides by 3

3m/3 = 36/3

m = 12