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Gheorghetimofe849
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Află valoarea fiecărei litere:- (138x 5-21:7-300 x 2) -9x9-r 2 =2​

Răspuns :

Bazilalina777muta

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꧁rezolvare꧂

(138•5-21:7-300•2)-9•9-r=2

(690-3-600)-81-2r=2

87-81-2r=2

6-2r=2

-2r = 2-6

= -4

r = -4:(-2)

= 4:2

= 2

-ˋˏ ༻bazilalina777muta༺ ˎˊ-

Explicație pas cu pas:

[tex] \bf(138 \cdot 5-21:7-300 \cdot 2) -9 \cdot9-r=2[/tex]

[tex] \bf(690-21:7-300 \cdot 2) -9 \cdot9-r=2[/tex]

[tex] \bf(690-3-300 \cdot 2) -9 \cdot9-r=2[/tex]

[tex] \bf(690-3-600) -9 \cdot9-r=2[/tex]

[tex] \bf(687-600) -9 \cdot9-r=2[/tex]

[tex] \bf87 -9 \cdot9-r=2[/tex]

[tex]\bf87 -81-r=2[/tex]

[tex] \bf6-r=2[/tex]

[tex]\bf6=2 + r[/tex]

[tex]\bf6 - 2 = r[/tex]

[tex]\bf4=r[/tex]

[tex]\bf \red{ \underline{r = 4}}[/tex]

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