5☆(-5)=1/3×5-1/4×(-5)=35/12,
2☆(2☆X)
=2☆(2/3-X/4)
=2☆(8-3X)/12
=2/3-(8-3X)/48,
∴2/3X-(8-3X)/48=1/3-X/4
32X-8+3X=16-12X
47X=24
X=24/47.
5☆(-5)=1/3×5-1/4×(-5)=35/12,
2☆(2☆X)
=2☆(2/3-X/4)
=2☆(8-3X)/12
=2/3-(8-3X)/48,
∴2/3X-(8-3X)/48=1/3-X/4
32X-8+3X=16-12X
47X=24
X=24/47.