Question

Sa se efectueze: a)-3/5 x (-2/9) = b) -5/8 x 1 7/25 c) -2 2/3 x (-2 2/5

Answer 1

Răspuns:

a) - 3/5  x  (-2/9) = - 1/5 x ( - 2/3) = 2/15

b) -5/8  x  1 7/25  = -1/8  x  17/5 = - 17/40

c) -2 2/3 x (-2 2/5) = -(2x3+2)/3   x    (- (2x5+2)/5) = - 8/3  x  ( - 12/5) = - 8  x (-4/5) = 32/5 = 6 intregi 2/5