Express as a sum: 15-7
Please show work I'm confused on how you can express it as a SUM...
Thank you!

This is the number of parts out of 100, the numerator of a fraction where the denominator is 100. submit

Ametal rod needs to be 9 feet and 5.5 inches in length. the sections of the poles being used are each 1 foot and 10.5 inches long. how many 1ft 10.5in sections would be needed to complete the 9ft 5.5in metal rod? and how many inches of material will be left?

Asystem of equations has 1 solution. if 4x-y=5 is one of the equations , which could be the other equation ?