4/4-x = 5/4+x what is x

Aright triangle has an area of 18 square inches. b: if the triangle is not an isosceles triangle, what are all the possible lengths of the legs, if the lengths are whole numbers. answer !

A. 90 degrees b. 45 degrees c. 30 degrees d. 120 degrees

The difference of two numbers is 40. find the numbers if 0.3 parts of one number is equal to 37.5% of the other one.