Question

3 задание!! 100 баллов!! подробно!

Answer 1

$\frac{3c}{2d^{2}} =\frac{3c*3a}{2d^{2}*3a}=\frac{9ac}{6ad^{2}} \\\\\frac{6+d}{6ad}=\frac{(6+d)*d}{6ad*d} =\frac{6d+d^{2}}{6ad^{2}}$