Respuesta:
1.
[tex]\frac{2.5+1}{2-2.7}\\\\=\frac{3.5}{2-2.7}\\\\=\frac{3.5}{2-2.7}\\\\=-\frac{3.5}{0.7}\\\\=-5[/tex]
2.
[tex]1.6\times \:2/5\\\\=1.6\times \:0.4\\\\=0.64\\[/tex]
3.
[tex]\frac{7.56\times \:2.5+2}{6}\\\\=\frac{20.9}{6}\\\\=3.48333\dots[/tex]
4.
[tex]\frac{2}{5}+\frac{3}{6}-1.5\\\\=\frac{2}{5}+\frac{1}{2}-1.5\\\\=\frac{4}{10}+\frac{5}{10}\\\\=\frac{4+5}{10}\\\\=-1.5+\frac{9}{10}\\\\=-1.5+0.9\\\\=-0.6[/tex]
5.
[tex]2.56\div \:1/5\\\\=2.56\div \:5\\\\=0.512\\\\[/tex]
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Verified answer
Respuesta:
1.
[tex]\frac{2.5+1}{2-2.7}\\\\=\frac{3.5}{2-2.7}\\\\=\frac{3.5}{2-2.7}\\\\=-\frac{3.5}{0.7}\\\\=-5[/tex]
2.
[tex]1.6\times \:2/5\\\\=1.6\times \:0.4\\\\=0.64\\[/tex]
3.
[tex]\frac{7.56\times \:2.5+2}{6}\\\\=\frac{20.9}{6}\\\\=3.48333\dots[/tex]
4.
[tex]\frac{2}{5}+\frac{3}{6}-1.5\\\\=\frac{2}{5}+\frac{1}{2}-1.5\\\\=\frac{4}{10}+\frac{5}{10}\\\\=\frac{4+5}{10}\\\\=-1.5+\frac{9}{10}\\\\=-1.5+0.9\\\\=-0.6[/tex]
5.
[tex]2.56\div \:1/5\\\\=2.56\div \:5\\\\=0.512\\\\[/tex]