If + = `xx`, - = ÷, `xx` = +, ÷ = - then which is the correct equation out of following?

Options

A. `18-6xx7-:2+8=63`
B. `18-:6+4-2-:3=22`
C. `18+6-4xx2-:3=26`
D. `18xx6-4+7xx8=47`

Answer

C

Explanation

Option (1)
`18-6xx7-:2+8=63`
`implies18-:6+7-2xx8=63`
`implies3+7-16ne63`
Option (2)
`18-:6+4-2-:3=22`
`implies18-6xx4-:2-3=22`
`implies18-6xx2-3-22`
`implies18-12-3ne22`
Option (3)
`18+6-4xx2-:3=26`
`implies18xx6-:4+3=26`
`implies27+2-3=26`
Option (4)
`18xx6-4+7xx8=47`
`implies18+(3)/(2)xx7+8=47`
`implies18+(21)/(2)+8=47`
`implies(36+21+16)/(2)=47`
`implies73ne47xx2`