Question

2×(3x+1)-1=43 Cat este x?​

Answer 1

2×(3x + 1) - 1 = 43

6x + 2 - 1 = 43

6x = 43 - 2 + 1

6x = 42

x = 42 : 6

x = 7

Answer 2

Răspuns:

2x(3x+1)-1=43

Notam paranteza 3x+1 cu Y

2xY-1=43

Notam de asemenea 2xY cu Z

Z-1=43

Z=43+1

Z=44

Z=2xY=> 2xY=44

Y=44:2

Y=22

Y=3x+1=> 3x+1=22

3x=22-1

3x=21

x=21:3

x=7