Question

Aflati nr x stiind ca:a-2b=8,iar 12-2x+3a-6b=10

Answer 1

a - 2b = 8

12 - 2x + 3a - 6b = 10

12 - 2x + 3 ( a - 2b ) = 10

12 - 2x + 3 · 8 = 10

12 - 2x + 24 = 10

-2x = 10 - 24 - 12

-2x = -14 - 12

-2x = -26

x = - 26 / -2

x = 13

Answer 2

Răspuns:

Explicație pas cu pas:

12 - 2x +3 (a-2b) =10

12 - 2x +3*8 =10

12 +24 - 10 = 2x

2x= 26

x= 13

Succes !!