Question

Oblicz : (-2,25 - (-4 7/8)) * 8 =

(4,2 * 3 1/3 * (-6) + (-2,75) : 1 5/6=

Answer 1

1.

(-2 i 25/100   +  39/8) *8 = (-900/400   +  1950/400)*8=  2850/400 * 8 =

= 57

2.

Nie napisałeś w drugim przykładzie gdzie konczy się nawias

 

 

Answer 2

[2,25 -(-4 i7/8)] *8 = [2,25 +4,875] *8= 7,125 *8 = 57

 

[4,2 *3i1/3* (-6) +(-2,75)] :1i5/6 = [4i1/5 *10/3*(-6) -2i3/4] :11/6 = [21/5 *10/3 *(-6) -

-2i3/4] :11/6 =[7/1 *2/1 *(-6)-2i3/4] :11/6=  [14*(-6)-2i3/4]:11/6 = [-84 -2i3/4]:11/6=

= -86 i3/4 :11/6 = - 347/4 * 6/11 = -347/2 * 3/11 = -1041/22 = - 47 i 7/22