Question

Cine poate rezolva [1/2+0,45•2+0,6]*2:0,01

Answer 1

Salut.

$\displaystyle{(\frac{1}{2}+0,45\times2+0,6)\times2:0,01=}$

$\displaystyle{=(\frac{1}{2}+\frac{45}{100}\times2+0,6)\times2:0,01}$

$\displaystyle{=(\frac{1}{2}+\frac{9}{20}\times2 + 0,6)\times 2 : 0,01}$

$\displaystyle{=(\frac{1}{2}+\frac{18}{20}+\frac{6}{10})\times2:0,01}$

$\displaystyle{=(\frac{1}{2}+\frac{9}{10}+\frac{6}{10})\times2 : 0,01}$

$\displaystyle{=(\frac{5}{10}+\frac{9}{10}+\frac{6}{10})\times2:0,01}$

$\displaystyle{=\frac{5+9+6}{10}\times2:0,01}$

$\displaystyle{=\frac{20}{10}\times2:0,01}$

$\displaystyle{=2\times2:0,01}$

$\displaystyle{=4:0,01}$

$\boxed{=400}$

- Lumberjack25