[tex]A= \frac{4}{5}+ \frac{7}{15}*3 [/tex]
[tex]A= \frac{4}{5}+ \frac{21}{15} [/tex]
[tex]A= \frac{4}{5}+ \frac{7*3}{5*3} [/tex]
[tex]A= \frac{4}{5}+ \frac{7}{5} [/tex]
[tex]A= \frac{11}{5} [/tex]
[tex]B=( \frac{3}{2})^{2}- \frac{1}{4}: \frac{3}{2} [/tex]
[tex]B=\frac{9}{4}}- \frac{1}{4}: \frac{3}{2} [/tex]
[tex]B=\frac{9}{4}}- \frac{1}{4}* \frac{2}{3} [/tex]
[tex]B=\frac{9}{4}}- \frac{2}{12}[/tex]
[tex]B=\frac{9*3}{4*3}}- \frac{2}{12}[/tex]
[tex]B=\frac{27}{12}}- \frac{2}{12}[/tex]
[tex]B=\frac{25}{12}}[/tex]