a) 5-(-2):1/2=5-(-4)=5+4=9
b) (-3-7)+5:1/5=(-10)+25=15
c) (5-(-2)):1/2=7:1/2=14
d) [(-3-7)+5}:1/5= [-10+5}:1/5=(-5):1/5=(-25)
e) [5-(-2)]*1/2=7*1/2=3,5
f) [(-3-7)+5)*1/5=[(-10)+5)*1/5=(-5)*1/5=1
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a) 5-(-2):1/2=5-(-4)=5+4=9
b) (-3-7)+5:1/5=(-10)+25=15
c) (5-(-2)):1/2=7:1/2=14
d) [(-3-7)+5}:1/5= [-10+5}:1/5=(-5):1/5=(-25)
e) [5-(-2)]*1/2=7*1/2=3,5
f) [(-3-7)+5)*1/5=[(-10)+5)*1/5=(-5)*1/5=1