-2,1 and -4,5
(y^2+7xy+16x^2)dx+x^2dy=0
(2
4 × (
1
4
)
2
3
÷ (
−2
12/300
(4x^3)^1*(y^-2)^-3
1044 :12 :1
783:9:0.75
if p is 120% of q, then q is what percentage of p
10÷553
