rezolva ecuatia asta te rog:
3*(2X*5)+19=82


Răspuns :

3 × ( 2 x × 5 ) + 19 = 82

3 × ( 2 x × 5 ) = 82 - 19

3 × ( 2 x × 5 ) = 63

2 x × 5 = 63 : 3

2 x × 5 = 21

2 x = 21 : 5

2 x = 4, 2

x = 4, 2 : 2

x = 2, 1

Răspuns:

Explicație pas cu pas:

3 × ( 2x × 5 ) + 19 = 82

3 × ( 10x ) + 19 = 82

3 × 10x + 19 = 82

30x + 19 = 82

30x = 82 - 19

30x = 63

x = 63 / 30

x = 21 / 10