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18.
. va roggggg mult !!!​


18 Va Roggggg Mult class=

Răspuns :

Răspuns:

a.42/21+(-10/10)=2-1=1

b. -5/4+1/4=-4/4=-1

c. 16×(1×4+1)/4-1=16×5/4-1=20-1=19

d.2/15×(3×4+3)/4-3/1×5/6=2/15×15/4-3/1×5/2=1/2-5/2=-4/2= -2