Oblicz jak najprostszym sposobem: a) 3\8 * (-0.9)*(-16\3)*10=
b) 5*(-0.25)*0.2*(-4)=
c) (-2.5)*0,2*(-10)*2=
d) (-6)*(-4/7)*2\5*(-7)*5\12=
e) (-1 1/2)*0.06*(-2/3)*100=
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a) 3/8 *(-0,9) * (-16/3) *10 = 3/8 * (-16/3) *(-9/10) *10 = 1/1 *(-2/1) * (-9/1)*1= -2 * (-9) = 18
b) 5*(-0,25) *0,2 *(-4)= 5*(-4) *(-0,25) *0,2= -20 *(-0,05) = 1
c) (-2,5) *0,2 *(-10)* 2= (-0,5) *(-20) = 10
d) (-6) *(-4/7) *2/5 *(-7) *5/12= (-6)*(-4/7)* (-7) *2/5 *5/12= (-6) *(-4/1)* (-1/1) *1/1 *1/6=
= (-6) *(-4) * 1/6= 24 * 1/6 = 24/6 = 4
e) (-1i1/2) *0,06 *(-2/3) *100 = (-3/2) *(-2/3) * 0,06 * 100= (-1/1)*(-1/1)*6= 1*6= 6