afla nr necunoscut a) 639-a=286. B) a-437=19c)636+a=921

Răspunsul a fost dat de: USER6271
2 September 2025 matematica 5 minute
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Întrebare

Clasă: Education Materie: matematica
afla nr necunoscut a) 639-a=286. B) a-437=19c)636+a=921
Întrebare a fost pusă de:
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Răspuns (56)

Cel mai bun răspuns
(124)
a) 639-a = 286
a = 639 - 286
a = 35 3
639-353=286
b) a-437=19
a=437+19
a=456
456-437=19
Răspunsul a fost dat în data 2 September 2025
(241)

Răspuns

a) 353 b) 456 c)285

Explicație pas cu pas:

a)639-a=286

a=639-286

a=353

b) a-437=19

a=19+437

a=456

c) 636+a=921

a=921-636

a=285

Răspunsul a fost dat în data 2 September 2025

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