Answer:
[tex]2\frac{1}{4} [/tex]
Step-by-step explanation:
[tex](\frac{21}{16} *\frac{12}{9} )+(-\frac{3}{8} *-\frac{12}{9} )[/tex]
[tex]\frac{252}{144}+\frac{36}{72} [/tex]
Before adding these fractions, simplify both fractions.
[tex]\frac{21}{12} +\frac{3}{6} [/tex]
Still you can simplify.
[tex]\frac{7}{4} +\frac{1}{2} [/tex]
Now let us add these fractions.
[tex]\frac{7}{4} +\frac{1}{2} \\\\\frac{7}{4} +\frac{1*2}{2*2} \\\\\frac{7}{4} +\frac{2}{4} \\\\\frac{9}{4} \\\\2\frac{1}{4} [/tex]
Hope this helps you :-)
Let me know if you have any other questions :-)