Sagot :
Solution:
[tex]2\frac{15}{10}+1\frac{1}{2}\\\\=2\frac{3}{2}+1\frac{1}{2}\\\\=(2+1\frac{1}{2})+1\frac{1}{2}\\\\=3\frac{1}{2}+1\frac{1}{2}\\\\=4+(\frac{1}{2}+\frac{1}{2})\\\\=4+1\\\\=5[/tex]
Solution:
[tex]2\frac{15}{10}+1\frac{1}{2}\\\\=2\frac{3}{2}+1\frac{1}{2}\\\\=(2+1\frac{1}{2})+1\frac{1}{2}\\\\=3\frac{1}{2}+1\frac{1}{2}\\\\=4+(\frac{1}{2}+\frac{1}{2})\\\\=4+1\\\\=5[/tex]