7x-3y=15
2x+3y=12
$\frac{x^3+9x^2}{2x}$ × $\frac{x^2-14x+45}{x^2-81}$
e^x.(y-3(e^x+1)^2)dx+(e^x+1)^2dy
e^x(y-3(e^x+1)^2)dx+(e^x+1)^2dy
x^2=4xy
-1/4-2/3
3x+2y=22
x-2y=2
2x+3y=16
x+3y=14
$\frac{x}{8x+48}$ ÷ $\frac{x^2+11x+18}{x^2+8x+12}$
15-10/15-14=0,001001-0,001000/0,001001-x
