Działania na liczbach wymiernych. Potrzebuje na dziś :(
A)
B)
C
Błagam niech ktoś mi pomoże :(
a)
-12*3 7/15+3 1/2:5= -12*52/15+7/2:5= -4*52/5+7/2*1/5=208/5+7/10=
416/10+7/10=423/10=42 3/10=42,3
b)
3 3/4:3/10-(-1 1/6):7/5=15/4:3/10-(-7/6):7/5=15/4*10/3-(-7/6)*5/7=
150/12-(-5/6)=150/12+5/6=150/12+10/12=160/12=13 4/12=13 1/3
c)
2 3/4:(3/4:(3/4-2 1/6)-1/2=11/4:(3/4:(3/4-13/6)-1/2=
11/4:(3/4:(9/12-26/12)-1/2=11/4:(3/4: (-17/12))-1/2=
11/4:(3/4*(-12/17))-1/2=11/4:(-9/17)-1/2=11/4* (-17/9)-1/2=
-187/36-1/2=-187/36-18/36= -205/36= -5 25/36
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a)
-12*3 7/15+3 1/2:5= -12*52/15+7/2:5= -4*52/5+7/2*1/5=208/5+7/10=
416/10+7/10=423/10=42 3/10=42,3
b)
3 3/4:3/10-(-1 1/6):7/5=15/4:3/10-(-7/6):7/5=15/4*10/3-(-7/6)*5/7=
150/12-(-5/6)=150/12+5/6=150/12+10/12=160/12=13 4/12=13 1/3
c)
2 3/4:(3/4:(3/4-2 1/6)-1/2=11/4:(3/4:(3/4-13/6)-1/2=
11/4:(3/4:(9/12-26/12)-1/2=11/4:(3/4: (-17/12))-1/2=
11/4:(3/4*(-12/17))-1/2=11/4:(-9/17)-1/2=11/4* (-17/9)-1/2=
-187/36-1/2=-187/36-18/36= -205/36= -5 25/36