"12/9*23^5*(23+90)
(1+2/i)(3+4/i)(5+i)-1
u/3-13=-2
u=
|2x/3+8|=10
20% OF 4000
2x/3+8=10
5x²=-2x
(x+1)^6
8 6 4 = 6 7 8
1+1=
