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determina termenul necunoscut ​

Determina Termenul Necunoscut class=

Răspuns :

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

a)

[tex] \frac{8}{10} - ( \frac{5}{10} + x) = \frac{1}{10} [/tex]

[tex] \frac{5}{10 } + x = \frac{8}{10} - \frac{1}{10} [/tex]

[tex] \frac{5}{10} + x = \frac{7}{10} [/tex]

[tex]x = \frac{7}{10} - \frac{5}{10} = \frac{2}{10} [/tex]

b)

[tex]2 - \frac{2}{2} - y = \frac{1}{2} [/tex]

[tex] \frac{2}{1} - \frac{2}{2} - y = \frac{1}{2} [/tex]

[tex] \frac{4}{2} - \frac{2}{2} - y = \frac{1}{2} [/tex]

[tex] \frac{2}{2} - y = \frac{1}{2} [/tex]

[tex]y = \frac{2}{2} - \frac{1}{2} [/tex]

[tex]y = \frac{1}{2} [/tex]

SAU(mai usor)

[tex]2 - \frac{2}{2} - y = \frac{1}{2} [/tex]

[tex]2 - 1 - y = \frac{1}{2} [/tex]

[tex]1 - y = \frac{1}{2} [/tex]

[tex]1 - y = 0.5[/tex]

[tex]y = 1 - 0.[/tex]

[tex]y = 0.5 = \frac{1}{2} [/tex]