a) (-3) · (-2-10)-5
₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋ =
7-9
b) (-2)³ + 45 : (-3²) =
c) 15-(-2) · 4 5 - 2
------------ + --------- =
-11 + 4 2 - 3
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a)
= (-3)*(-12)-5 36 - 5 31
---------------- = -------- = ---- = - 15,5
-2 -2 -2
b)
= -8 + 45 : (-9) = -8 - 5 = -13
c)
= 15-(-8) 3 23 3 23 21 44 2
------------ + --- = ----- + ---- = ----- + ------ = ---- = -42 ---
-7 -1 -7 -1/7 -7 -7 -7 7
a) (-3) · (-2-10)-5 (-3)*(-12)-5 36-5 31
₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋ = --------------- =---------=------- = 31*(-1/2)=-15 1/2
7-9 -2 -2 -2
b) (-2)³ + 45 : (-3²) =-8+45:9=-8+9=1
c) 15-(-2) · 4 5 - 2 15+8 3
-------------- + --------- = -------- + -----= 23*(-1/7)+3*(-1)=-23/7-3=
-11 + 4 2 - 3 -7 -1
=-3 2/7-3=-6 2/7