Answer:
Step-by-step 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
