Question 303497
30/75=x/90
Find the least common denominator and multiply each side by it. In this case it would be 450. So it turns out to be 450/1*30/75. Cross out the similarities and it becomes 6/1*30/1. Then multiply the other side by 450. x/90*450/1. Cross out the similarities and it becomes x/1*5/1. Over all you get 180/1=5x/1 which is the same thing as 180=5x. Divide 180 by five to get the variable by itself and the answer is x=36.