Question

determina termenul necunoscut ​

Answer 1

Răspuns:

Explicație pas cu pas:

a)  8/10-1/10=x+5/10  x=7/10-5/10=2/10=1/5 ;  b)   2-1-y=o,5 ;  y=1-0,5 ;   y=0,5

Answer 2

a)

$\frac{8}{10} - ( \frac{5}{10} + x) = \frac{1}{10}$

$\frac{5}{10 } + x = \frac{8}{10} - \frac{1}{10}$

$\frac{5}{10} + x = \frac{7}{10}$

$x = \frac{7}{10} - \frac{5}{10} = \frac{2}{10}$

b)

$2 - \frac{2}{2} - y = \frac{1}{2}$

$\frac{2}{1} - \frac{2}{2} - y = \frac{1}{2}$

$\frac{4}{2} - \frac{2}{2} - y = \frac{1}{2}$

$\frac{2}{2} - y = \frac{1}{2}$

$y = \frac{2}{2} - \frac{1}{2}$

$y = \frac{1}{2}$

SAU(mai usor)

$2 - \frac{2}{2} - y = \frac{1}{2}$

$2 - 1 - y = \frac{1}{2}$

$1 - y = \frac{1}{2}$

$1 - y = 0.5$

$y = 1 - 0.$

$y = 0.5 = \frac{1}{2}$