Question

2.5+1/2-2.7=
1.6×2/5=
7.56×2.5+2/6=
2/5+3/6-1.5=
2.56÷1/5=​

Answer 1

Respuesta:

1.

$\frac{2.5+1}{2-2.7}\\\\=\frac{3.5}{2-2.7}\\\\=\frac{3.5}{2-2.7}\\\\=-\frac{3.5}{0.7}\\\\=-5$

2.

$1.6\times \:2/5\\\\=1.6\times \:0.4\\\\=0.64$

3.

$\frac{7.56\times \:2.5+2}{6}\\\\=\frac{20.9}{6}\\\\=3.48333\dots$

4.

$\frac{2}{5}+\frac{3}{6}-1.5\\\\=\frac{2}{5}+\frac{1}{2}-1.5\\\\=\frac{4}{10}+\frac{5}{10}\\\\=\frac{4+5}{10}\\\\=-1.5+\frac{9}{10}\\\\=-1.5+0.9\\\\=-0.6$

5.

$2.56\div \:1/5\\\\=2.56\div \:5\\\\=0.512$