do różnicy liczby -0,64 i liczby -2,8 dodaj różnicę liczby -8,6 i liczby 0,4
daję naj ;**
[ -0,64 - (-2,8) ] + [ -8,6 - 0,4 ] = (-0,64 + 2,8) + (-9) = 2,16 + ( - 9 ) = - 6,84
[(-0,64-(-2,8) + ( -8.6-0.4)] = 2,16 + (-8,2)= 6,14
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[ -0,64 - (-2,8) ] + [ -8,6 - 0,4 ] = (-0,64 + 2,8) + (-9) = 2,16 + ( - 9 ) = - 6,84
[(-0,64-(-2,8) + ( -8.6-0.4)] = 2,16 + (-8,2)= 6,14