self Maths Puzzle

If @ means triple of, # means double of and ^ means half of then value of @^#^@^7 + @#@#^3 is

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self Other Question

In a row of 27 girls, when M was shifted by four places towards right she became 13th from the left end. What was her earlier position from the right end? If 63+25=12, 21+27=16 and 42+29=20, then 51+31=??

Explain??