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Afla valoarea lui ,,n'' din egalitatile:
5ori n plus 245 egal 845
54 impartit n plus 67ori 5 egal 344
n impartit 3 ori 8 egal 616
894 minus n impartit 4 egal 833
Repede sa fie corect si rezolvatile pe toate. Dau 30 pnct raspunsului corect.


Răspuns :

[tex]5*n+245=845[/tex]
[tex]5*n=845-245[/tex]
[tex]5*n=600[/tex]
[tex]n= \frac{600}{5}[/tex]
[tex]n=120[/tex]

[tex] \frac{54}{n}+67*5=344 [/tex]
[tex] \frac{54}{n}+335=344 [/tex]
[tex] \frac{54}{n}=344-335 [/tex]
[tex] \frac{54}{n}=9 [/tex]
[tex]9n = 54[/tex]
[tex]n=\frac{54}{9}=6[/tex]

[tex] \frac{n}{3}*8=616 [/tex]
[tex] \frac{n}{3}= \frac{616}{8} =77[/tex]
[tex]n=77*3[/tex]
[tex]n=231[/tex]

[tex]894-\frac{n}{4}=833[/tex]
[tex]-\frac{n}{4}=833-894[/tex]
[tex]-\frac{n}{4}=-61[/tex]
[tex]\frac{n}{4}=61[/tex]
[tex]n=61*4[/tex]
[tex]n=244[/tex]
5xn+245=845
5xn=845-245
5n=600
n=600:5
n=120

54:n+67x5=344
54:n+335=344
54:n=344-335
54:n=9
n=54:9
n=6

n:3x8=616
n:3=616:8
n:3=77
n=77x3
n=231

894-n:4=833
n:4=894-833=61
n=61x4
n=244