12: (-2)×[3×(-5) +(-2)×(-5)]- √625
-------------------------------------------------- +(-15): ∛27=
(-4)× √25 - (-3) × √49
oraz
2,5: 1 1/3 + 3,75 × 4,2 - 6,25 : 7 1/7
pls pomocy
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-6 x [-15+10]-25 -6 x (-5)-25
----------------------------- -5 = -------------------------- -5 = 5-5=0
-20+21 1