Jak rozwiązać te dwa przykłady proszę pomóżcie...
a) 19/53·2 3/5-2,6·19/53
b) -3/8:15-0,125:15
a)
19/53 * 2 3/5 - 2,6 * 19/53 = 19/53 * 13/5 - 26/10 * 13/5 = 19/53 * 13/5 - 13/5 * 19/53 = 0
b)
-3/8 : 15 - 0,125 : 15 = -3/8 *1/15 - 125/1000 *1/15 = 1/15 *(-3/8 - 125/1000) =
= 1/15 *(-3/8 - 5/40) = 1/15 *(-15/40 - 5/40) = 1/15 *(-20/40) = 1/15 *(-1/2) = -1/30
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a)
19/53 * 2 3/5 - 2,6 * 19/53 = 19/53 * 13/5 - 26/10 * 13/5 = 19/53 * 13/5 - 13/5 * 19/53 = 0
b)
-3/8 : 15 - 0,125 : 15 = -3/8 *1/15 - 125/1000 *1/15 = 1/15 *(-3/8 - 125/1000) =
= 1/15 *(-3/8 - 5/40) = 1/15 *(-15/40 - 5/40) = 1/15 *(-20/40) = 1/15 *(-1/2) = -1/30