Question

calculati -35+x=-40 ??
-15-x=30
5x+11=-4
-3x-4=17​

Answer 1

Răspuns:

Explicație pas cu pas:

- 35 + x = - 40

x = - 40 + 35

x = - 5

_____________

- 15 - x = 30

- x = 30 + 15

- x = 45

x = - 45

______________

5 x + 11 = - 4

5 x = - 4 - 11

5 x = - 15

x = ( - 15 ) : 5

x = - 3

_______________

- 3 x - 4 = 17

- 3 x = 17 + 4

- 3 x = 21

x = 21 : ( - 3 )

x = - 7

Answer 2

-35 + x = -40

x = 35 - 40

x = - 5

-15 - x = 30

- 15 - 30 = x

x = - 45

5x + 11 = - 4

5x = - 4 - 11

5x = - 15

x = - 3

- 3x - 4 = 17

- 4 - 17 = 3x

3x = - 21

x = - 7