Question

Salut. Am si eu problemele astea de facut la matematica.

Answer 1

1.
24×(1/2 +1/6+1/8 ) = 24 × (1/2 (se amplifica cu 12 ) +1/6 ( se amplifica cu 4 ) + 1/8 ( se amplifica cu 3 ) ) =24× 12+4+3/24 = 24× 19/24 = 456/24 ( se simplifică prin 24 ) = 19/1 = 19

2.
[1/2 +1/3:(1-1/3)]:3/2 = [1/2+1/3:( 1/1 ( se amplifica cu 3 ) -1/3)] :3/2 = (1/2+1/3:3-1/3):3/2 =( 1/2+1/3: 2/3 ):3/2 = (1/2+1/3×3/2 ) :3/2 = (1/2 + 3/6) :3/2 = (1/2 (se amplifica cu 3 ) +3/6) :3/2 = (3/6+3/6) :3/2 = 6/6 :3/2 = 6/6× 2/3 = 12/ 18 ( se simplifică prin 6 ) = 2/3