Question

Wykonaj działania .

a) - 12,4 - 2,4 : (-2 i 2/3) + 2 i 2/3 * (-0, 9) - 0 , 1

b ) -[-(7 i 1/3) : 1,1 - 1,1 * 6 i 2/3] + 4 i 1/6 * (-4)

c) 0,024 * (-3 i 1/3) : 0,004 - [ -1 i 1/7 *(-5 i 5/8 + 2 i 1/8 : 1,7)]

d) 40 - 2 i 4/7 : [-0,12 + (-3/4) : 12,5] * (-1,4)

z gory dzięki.!

daje max.;p

Answer 1

A) -12,4-2,4 : (-2 2/3) + 2 2/3 × (-0,9) - 0,1 ==-62/5 - 12/5*(-3/8)+8/3*(-9/10)-1/10= -62/5+36/40-72/30-1/10=
=-12,4+0,9-2,4-0,1=-14

 

-[ - ( -7 1/3) : 1,1 - 1,1 × 6 2/3 ] + 4 1/6 × (-4) =
=-[-(-22/3)*10/11-11/10*20/3]-100/6=-[-(-20/3)-22/3]-100/6=
=-[20/3-22/3]-50/3=-(-2/3)-50/3=2/3-50/5=-48/3=-16

 

:)

 

 

Answer 2

a) -12,4-2,4:(-2i2/3)+2i2/3*(-0,9)-0,1= -12,24-2,4:(-2,7)+2,7*(-0,9)-0,1= -12,4+0,9-2,43-0,1= -14,03

 

b) -[-(7i1/3):1,1-1,1*6i2/3+4i1/6*(-4) = -[-(7i1/3):1i1/10-1i1/10*6i2/3]+4i1/6*(-4)= -[(22/3):11/10-11/10*20/3]+25/6*(-4)= 22/3,10/11 - 11/10*20/3]-100/6=20/3-22/3-50/3= 48/3=-17 i 1/3

 

c) 0,024*(-3i1/3):0,004 -[-1i1/7*(-5i5/8 + 2i1/8:1,7)] = 0,024*(-3,33):0,004 -

-[-1,14(-5,625+2,125:1,7)]=-0,080:0,004-[-1,14(-5,625+1,25)]=-20-[-1,14*

*(-4,375)]= -20 -4,9875 = -24,9875

 

d) 40-2i4/7:[-12+(-3/4):12,5]*(-1,4)= 40-2,6:[-0,12-0,06]*(-1,4)=40-2,6:

:0,252= 40-10,32=29,68