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3 x 5+5 x {5+5 : [45 : 5 - (9 x 4 : x + 4)] + 6 x 0 } = 65

Va rog ajutati-ma la acest exercitiu.


Răspuns :

3x5+5x{5+5:[45:5-(9x4:x+4)]+6x0}=65

15+5x{5+5:[9-(36:x+4)]+0}=65

15+5x{5+5:[9-36:x-4]}=65

15+5x[5+5:(5-36:x)]=65

15+5x{5+5:[(5x-36):x]}=65

15+5x{5+5×[x:(5x-36)]}=65

15+5x[5+5x:(5x-36)]=65

15+25+25x:(5x-36)]=65

40+25x:(5x-36)]=65

25x:(5x-36)]=65-40

25x:(5x-36)]=25

25x=25×(5x-36)

25x=125-900

100x=900

x=900:100

x=9

Răspuns:

3x5+5x{5+5:[45:5-(9x4:a+4)]+6x0}=65

15+5x{5+5:[9-(36:a+4)]+0}=65

5x{5+5:[9-(36:a+4)]+0}=65-15

5x{5+5:[9-(36:a+4)]+0}=50

5+5:[9-(36:a+4)]+0=50:5

5+5:[9-(36:a+4)]+0=10

5+5:[9-(36:a+4)]=10-0

5+5:[9-(36:a+4)]=10

5:[9-(36:a+4)]=10-5

5:[9-(36:a+4)]=5

9-(36:a+4)=5x5

9-(36:a+4)=25

36:a+4=25+9

36:a+4=34

36:a=34-4

36:a=30

a=36x30

a=1080

Explicație pas cu pas: