4*6 = 24. (4 dollars to spare)
(5*2) + (4*4) = 26 (2 dollars to spare)
^ ^
Number of people
2(5x-15) + 2(2x+7) =0
10x-30+4x+14 = 0
14x = 16
x = 8/7
(m^3)^-1 (x^2)^5 = (m^-3) (x^10) = x^10 / m^3
Yes the person is right I was trying to type it but they beat me to it