decrece £64 by 70%
2 - (7/10 - 1/5)
x=750-*30/c
c=?
(x+1)/(5-x) = x
x+1 / 5-x = x
4/5-2/3
-48/16
y=x^y^2-xy^2+x^2+y^3
25-9
94= 1/2(6x+8)(8x+12)
