Question

Efectuați calculele:
-3 1/14+(-1 2/7+5/6)=
(-1 2/3+5/8)+(-3 1/8+1 7/20)=




Va rog ajutati.ma !!

Answer 1

-3 1/14+(-1 2/7+5/6) = -43/14 + (-9/7 + 5/6) = -43/14 + (-54/42 + 35/42) = -43/14 + (-19/42) = -43/14-19/42 = -129/42 - 19/42 = -148/42 = -74/21

(-1 2/3+5/8)+(-3 1/8+1 7/20) = (-5/3 + 5/8) + (-25/8 + 27/20) = (-40/24 + 15/24) + (-125/40 + 54/40) = (-25/24) + (-71/40) = -25/24 - 71/40 = -125/120 - 213/120 = -338/120 = -169/60