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a fost răspuns

Afla numaru necunoscut din exercitiile date a) 397+42xm=859 b)974-124:n=943 c)40xp-500=3000

Răspuns :

CosmoteRo
a). 397+42m=859
42m=859-397
42m=462
m=11

b).974-124:n=943
974-943=124xn
31=124n
n=4
974-124:4=974-31=943 Verificare

c).40p-500=3000
40p=3000+500
40p=3500
p=3500:40
p=87,5

Rodi11
a)
397+42xm=859
42×m=859-397
42×m=462
m=462:42
m=11

b)
974-124:n=943
124:n=974-943
124:n=31
n=124:31
n=4

c)
40xp-500=3000
40×p=3000+500
40×p=3500
p=3500:40
p=87,5
daca ai notat bine exercițiu c)

deci e :
40×p-500=300
40×p=500+300
40×p=800
p=800:40
p=20

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