Question

Se stie ca a + b + c = 23 si x = 9 . Calculati :

2013 - (53 • a + 53 • b + 53 • c + 10 • x) =


349 + 6 • a + 6 • b + 6 • c - 12 • x =​

Answer 1

Răspuns:

2013 - (53 • a + 53 • b + 53 • c + 10 • x) =2013-53(a+b+c)+10·9=2013-53·23+90=2013-1219+90=704

349 + 6 • a + 6 • b + 6 • c - 12 • x =​349+6(a+b+c)-12·9=349+6·23-108=

349+138-108=379

Answer 2

1)dai factor comun pe 53

2013 - (53•23 + 90)

2013 - 1309 = 704

2)dai factor comun pe 6

349 + 6•23 - 108

349 + 138 - 108

349 + 20

369