Question

a){(-125):25+25-(-4)-[16:(-4)]}=

b){4x7-[(4x3+8:4)-(2x6-10)x5}+3x(4x7-26)=

c){-(-15)x2+[6-(-9)+16]}+39

--------------------------------------

[(-1)+5-(-6)]

d)1/2 x6:4:1/3=

e)1/2x(21-4x5/3)+1/3x(7+2 1/2)=

f)1/3X3-1/3:3+1/3x(3+1/3)-(1/3-3)=

g)2:(2-5/2)-(5/2+3/2)x(1/2-3/2)+3/5x(5/2-2/5)=

h)2 1/3+3 2/3:5 1/2-0,75x4=

i)3 3/5:1 1/2x1 1/3-2 3/4:0.25=

j){2 1/3-[(4 1/2-1 2/3):(4+1 2/3)+1/3]}:(1-1/4)=

Answer 1

a) {(-125):25+25-(-4)-[16:(-4)]}={-5+25-(-4)-(-4)}={20+4+4}=28

b) {4x7-[(4x3+8:4)-(2x6-10)]x5}+3x(4x7-26)={4x7-[12+2-2]x5}+3x2={28-12x5}+6=-32+6=-26

 

c)

 

      {-(-15)x2+[6-(-9)+16]}+39                 {-(-30)+31}+39           100                                        

--------------------------------------=-----------------------------=---------------=10

 [(-1)+5-(-6)]                                        10                                 10

       

d) 1/2 x6:4:1/3=3:4:1/3=3/4x3=9/4=2 1/4

e) 1/2x(21-4x5/3)+1/3x(7+2 1/2)=1/2x(21-6i 2/3)+1/3x19/2=1/2x43/3+19/6= 43/6+19/6=62/6=31/3=10 1/3

f)1/3X3-1/3:3+1/3x(3+1/3)-(1/3-3)=1-1/9+1/3x10/3- 8/3=8/9+10/9-8/3=8/9+10/9-24/9=-6

g)2:(2-5/2)-(5/2+3/2)x(1/2-3/2)+3/5x(5/2-2/5)=2:(-1/2)-8/2x(-1)+3/5x(25/10-4/10)=-4+8/2+3/5x21/10=63/50

h)2 1/3+3 2/3:5 1/2-0,75x4=7/3+11/3x2/11-3/4x4=7/3+2/3-3=0

i)3 3/5:1 1/2x1 1/3-2 3/4:0.25=18/5x2/3x4/3-11/4x4=16/5-11=-7 4/5

j){2 1/3-[(4 1/2-1 2/3):(4+1 2/3)+1/3]}:(1-1/4)={7/3-[(9/2-5/3):17/3+1/3]):3/4={7/3-[(27/6-10/6):17/3+1/3]}:3/4={7/3-[17/6x3/17+1/3]}:3/4={7/3-[1/2+1/3]}:3/4={7/3-[3/6+2/6]}:3/4={7/3-1/6}:3/4={14/6-1/6}x4/3=13/6x4/3=26/9=2 8/9

Mam nadzieje ze pomoglam :)