oblicz.
a) 2 4/5 * 3 b) (16 3/8 - 5 3/5) :5
całymi działaniami proszę
a) 2 4/5 * 3 = 14/5 * 3/1 = 42/5 = 8 2/5
b) (16 3/8 - 5 3/5) : 5 = (131/8 - 28/5) : 5 = 1/5 * (131/8 - 28/5) = 131/40 - 28/25 = 3275/1000 - 1120/1000 = 2155/1000 = 2 155/1000 = 2 31/200
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a) 2 4/5 * 3 = 14/5 * 3/1 = 42/5 = 8 2/5
b) (16 3/8 - 5 3/5) : 5 = (131/8 - 28/5) : 5 = 1/5 * (131/8 - 28/5) = 131/40 - 28/25 = 3275/1000 - 1120/1000 = 2155/1000 = 2 155/1000 = 2 31/200