What value of m makes the equation 5/2(4m-8)-2(6m-7)=-10

Which expression is equivalent to (4x^3*y^5)(3x^5*y)^2 \a) 24x^13*y^7b) 36x^13*y^7c) 36x^28*y^7d) 144x^16*y^12

I'm confused on this could anyone me and show me what i need to do to solve it.

The length of a rectangle plus its width is 24 cm. the area is 143 square cm. what are the length and width of the rectangle?