a) (1 1/2 - 3 * 1 1/3) : 2,5 =
b)( 2,5 - (8/15 - (- 0,15)) + (5/24)) :( -0,5 * 1 1/3) =
a)
b)(4/5-(8/15+3/20)+5/24):(-1/2*4/3)=(4/5-(32/60+6/60)+5/25):(-2/3)= (4/2-41/60+5/24)*(-3/2)= (48/60-41/60+5/24)*(-3/2)=(7/60+5/24)*(-3/2)=(168/1440+300/1440)*(-3/2)= (468-1440)*(-3/2)=-234/480=-117/240=-39/80
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a)
b)(4/5-(8/15+3/20)+5/24):(-1/2*4/3)=(4/5-(32/60+6/60)+5/25):(-2/3)= (4/2-41/60+5/24)*(-3/2)= (48/60-41/60+5/24)*(-3/2)=(7/60+5/24)*(-3/2)=(168/1440+300/1440)*(-3/2)= (468-1440)*(-3/2)=-234/480=-117/240=-39/80