If '+' means `'-:'`, 'x' means '+','-', means 'x' and `'-:'` means '-' then which of the following equations is correct?

Options

A. `36xx6+3-2lt20`
B. `36xx6+3xx2gt20`
C. `36+6xx3+2=20`
D. `36+6-3xx2=20`

Explanation

Option (1)
`36xx6+3-2lt20`
`implies36+6-:3xx2lt20`
`implies36+2xx2lt20`
Option (2)
`36xx6+3xx2gt20`
`implies36+6-:3+2gt20`
`implies36+2+2gt20`
Option (3)
`36+6xx3+2=20`
`implies36-:6+3-:2=20`
`implies6+(3)/(2)ne20`
Option (4)
`36+6-3xx2=20`
`implies36-:6xx3+2=20`
`implies6xx3+2=20`
`implies18+2=20`
Both the Options (2) and (4) are correct.