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Calculati:
a) 3/8+(-5/6)-(-7/12)
b) 8/27*(-63/32)-(11/18)
c) -16/45:(-8/15)+(-8/21)
d) (-21/28):(+54/48)+(-2,25):(0,54)

Răspuns :

a) 3/8+(-5/6)-(-7/12) (le amplificam)
9/24+20/24+28/24=57/24

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