a) (-7/12)+3/8 =-14/24+9/24=-5/24
b) (-3 i 1/5) - 2 i 1/2 =-3 i 2/10-2 i 5/10=-5 i 7/10
c) 1 i 1/6 - (-2 i 1/12) =1 i 2/12+2 i 1/12=3 i 3/12=3 i 1/4
d) 3,7 - 4 i 2/5 =3,7-4,4=-0,7
e) (-7/8) + (-0,7) =-7/8-7/10=-70/80-56/80=-126/80=-1 i 48/80=-1 i 6/10=
=-1 i 3/5
f) 1,4 - (-1 i 3/4) =1 i 4/10+1 i 3/4=1 i 8/20+1 i 15/20=2 i 23/20=3 i 3/20
g) (-2 i 1/5) - (-1,6) =-2,2+1,6=-0,6
Proszę:)
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a) (-7/12)+3/8 =-14/24+9/24=-5/24
b) (-3 i 1/5) - 2 i 1/2 =-3 i 2/10-2 i 5/10=-5 i 7/10
c) 1 i 1/6 - (-2 i 1/12) =1 i 2/12+2 i 1/12=3 i 3/12=3 i 1/4
d) 3,7 - 4 i 2/5 =3,7-4,4=-0,7
e) (-7/8) + (-0,7) =-7/8-7/10=-70/80-56/80=-126/80=-1 i 48/80=-1 i 6/10=
=-1 i 3/5
f) 1,4 - (-1 i 3/4) =1 i 4/10+1 i 3/4=1 i 8/20+1 i 15/20=2 i 23/20=3 i 3/20
g) (-2 i 1/5) - (-1,6) =-2,2+1,6=-0,6
Proszę:)