Question

pomoc w rozwiazaniu oblicz z 10z-25=12, 8z+4=3-6z obliczyc x 10x-25=12, 6x+3=2-4x

Answer 1

1)   10z - 25 = 12                             2)   8z +4 = 3 - 6z

       10z = 12 + 25                                  8z +6z = 3 -4 

        10z = 37     /:10                               14z = -1     /:14

          z = 3,7                                              z = -¹/₁₄

3)   

       6x +3 = 2 -4x

       6x +4x = 2 -3

       10x = -1     /:10

         x = - ¹/₁₀

 

 

 

 

 

 

 

 

 

 

 

           

 

 

Answer 2

10z-25=12,  

10z = 12+25

10z = 37  /:10

z = 37/10

z = 3 7/10

 

8z+4=3-6z

8z + 6z = 3 - 4

14z = -1    /:14

z = - 1/14

 

10x-25=12,  

10x = 12 + 25

10x = 37  /:10

x = 37/10

x = 3 7/10

 

6x+3=2-4x

6x+4x = 2 - 3

10x = -1    /:10

x = - 1/10

 

Proszę.