Question

efectuează următoarele probleme 1. [30:(25:5+1)+49:7×2]=
40-[30:(25:5+1)+49:7×2]=

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Answer 1

Răspuns:

$[30:(25:5+1)+49:7*2] =\\\\(30:(5+1)+7*2) =\\\\30:6 + 14 = \\\\ 5 + 14 = \\\\\boxed{19}$

$40 -[30:(25:5+1)+49:7*2] =\\\\40-(30:(5+1)+7*2) =\\\\40-(30:6 + 14) = \\\\40-(5 + 14) = \\\\40-19=\\\\\boxed{21}$

Answer 2

Explicație pas cu pas:

[30:(25:5+1)+49:7×2]=

[30:(5+1)+49:7×2]=

(30:6+49:7×2)=

5+7×2=

5+14=

19

40-[30:(25:5+1)+49:7×2]=

40-[30:(5+1)+49:7×2]=

40-(30:6+49:7×2)=

40-(5+7×2)=

40-(5+14)=

40-19=

21