Question

Proszę o wykonanie zadania umieszczonego w linku poniżej:

http://imageshack.us/photo/my-images/171/matmae.png/

Answer 1

a) (-0,5):1/3 - 2 1/2 *(-0,8) = (-5/10)*3 - 5/2 *(-8/10) = -15/10 - 4/2 = -3/2-4/2 = -7/2 = -3 1/2

b) [1 1/4 * (-2 2/3)+(-2,1):(-0,7)] *(-1) = [5/4*(-8/3)+3]*(-1) = [-10/3+3]*(-1) = -10/3+9/3]*(-1) = -1/3 *(-1) = 1/3

 

 

1/3:(-7/2) = 1/3*(-2/7) = -2/21

 

(-7/2):1/3 = (-7/2)*3 = - 21/2 = -10 1/2

Answer 2

a = -{3} over {2}-(-2)=0,5

b= {5} over {4} razy ( - {8} over {3} ) + ( - {21} over {10} ) razy ( - {10} over {7} ) = -  3{1} over {3}+3=-{1} over {3}  

 

a) {0,5} over -{{1} over {3} } 

b)-{{1} over {3} } over {0,5}