Crinapopazu62ask
a fost răspuns

12×x-5=14
63:(x-2)=7
14x+28=588
3×(2x+5)+19=82
7×(3x-5)+23=114
(4x+5):13+36=42​

Răspuns :

Liviaungurikask

Răspuns:

12x-5=14

12x=14+5

12x=19

x=19/12

63:(x-2)=7

x-2=63:7

x-2=9

x=9+2

x=11

14x+28=588

14x=588-28

14x=560

x=560:14

x=40

3×(2x+5)+19=82

3x(2x+5)=82-19

3x(2x+5)=63

2x+5=63:3

2x+5=21

2x=21-5

2x=16

x=16:2

x=8

7×(3x-5)+23=114

7×(3x-5)=114 -23

7×(3x-5)=91

3x-5=91:7

3x-5=13

3x=13+5

3x=18

x=18:3

x=6

(4x+5):13+36=42​

(4x+5):13=42​-36

(4x+5):13=6

4x+5=6x13

4x+5=78

4x=78-5

4x=73

x=73/4

Explicație pas cu pas: