Question

A) (13.86-3i5/6)+(-3.85+4i5/6)
b)15x(45.2:12-30:6i3/7)-1i35/36
dam naj prosze o bliczenie

Answer 1

A)  (13,86-3,83)+(-3,85+4,83)=10,03+0,98=11,01
b)
15*(3,76-4,66)-1,972= 
15*(-0,9)-1,972= -13,5-1,972= -15,472

Answer 2

A)
(13,86 - 3 i 5/6) + (-3,85 + 4 i 5/6)=

= ( 13 i 86/100 - 3 i 5/6) + (-3 i 85/100 + 4 i 5/6)=

= ( 13 i 258/300 - 3 i 250/300) + ( - 3 i 255/300 + 4 i 250/300)=

= 10 i 8/300 + 295/300 =

= 10 i 303/300 =

= 11 i 3/300 =

= 11 i 1/100 =

= 11,01




b)
15 * (45,2 : 12 - 30  : 6  i 3/7) - 1 i 35/36=

= 15 * ( 45 i 2/10 : 12 - 30 : 45/7) - 1 i 35/36=

= 15 * ( 45 i 1/5 : 12 - 30 * 45/7) - 1 i 35/36 =

= 15 * ( 226/5 * 1/12 - 2 * 7/3) - 1 i 35/36=

= 15 * ( 226/60 - 14/3) - 1 i 35/36=

= 15 * ( 3 i 46/60 - 4 i 2/3) - 1 i 35/36=

= 15 * (3 i 23/30 - 4 i 2/3) - 1 i 35/36=

= 15 * ( 3 i 23/30 - 4 i 20/30) - 1 i 35/36=

= 15 * (-27/30) - 1 i 35/36=

= 1 * (- 27/2) - 1 i 35/36=

= - 27/2 - 1 i 35/36 =

= - 13 i 1/2 - 1 i 35/36=

= - 13 i 18/36 - 1 i 35/36=

= - 14 i 53/36=

= - 15 i 17/36