-5+x over 22=-1 solve for x

This is so harddd! solve. 1 + 1 = solve 4 + 4 = solve 3 x 3

The point a is at –2 and the point b is at 7. marissa would like to divide this line segment in a 4: 3 ratio, and she would like to use the formula x = (x2 – x1) + x1. what values should she substitute into the formula? a = a + b = x1 = x2 =

Which expression gives the exact value of x?