Question

-y+8x-z-2x dla x=-2, y=6, z=-3

-8y-4z+x-y-2z+1 dla x=-0,5, y=-1, z=2

9y-(7y+x)+(6x-7y) dla x=-2, y=3

(6a-8b-0,7)-(6,9+a-5b)+1,8 dla a=0,2, b=0,1

0,5abc-(4ab+2abc)+(-bc+5ab)

Answer 1

1]

1/2-y+8x-z-2x=1/2-y+6x-z

   1/2-6+6*(-2)-(-3)=1/2-6-12+3=-14,5

2]

-8y-4z+x-y-2z+1       dla x=-0,5, y=-1, z=2

-9y-6z+x+1= -9*(-1)-6*2-0,5+1=9-12-0,5+1=-2,5

3]

9y-(7y+x)+(6x-7y)    dla x=-2, y=3

  9y-7y-x+6x-7y=-5y+5x

     -5*3+5*(-2)=-15-10=-25

4]

(6a-8b-0,7)-(6,9+a-5b)+1,8         dla  a=0,2, b=0,1

 6a-8b-0,7-6,9-a+5b+1,8= 5a-3b-5,8

          5*0,2-3*0,1-5,8=1-0,3-5,8=-5,1

 

 0,5abc-(4ab+2abc)+(-bc+5ab)=0,5abc-4ab-2abc-bc+5ab=-1,5abc+ab-bc

                                  nie podałes tutaj wartosci dla a, b i c