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If '-'stands for '+' '+' stands forxx an...

If '-'stands for '+' '+' stands for`xx` and `xx` for '-' , which one of the following equations is correct ?

A

`30 - 6 + 5xx 4+2 = 27`

B

`30 + 6 - 5 + 4 xx 2 = 30`

C

`30 xx 6 + 5 - 4 + 2 = 32`

D

`30 + 6 xx 5 + 4 -2 = 40`

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