[tex]12+x=51\\x = 51-12\\x = 39\\\\5+9x=104\\9x = 104-5\\9x=99\\x=11\\\\3x+1=2x-7\\3x-2x=-7-1\\x=-8\\\\8x+4=6x+10\\8x-6x=10-4\\2x=6\\x=3[/tex]
Odpowiedź:
12+x=51
x = 51 - 12
x= 39
spr.
12 + x= 51
L= 12 + x = 39 + 12 = 51
P = 51
51 = 51
L=P
5+9x=104
9x = 104 - 5
9x = 99
x= 99 : 9
x= 11
spr.
5+9x=104
L= 5 + 9x = 5 + 9*11 = 5 + 99 = 104
P= 104
104 = 104
L=P
3x+1=2x-7
3x - 2x = - 7 - 1
x = - 8
spr.
3x + 1 = 2x - 7
L= 3x + 1 = 3 * (-8) + 1 = - 24 + 1= - 23
P= 2x - 7 = 2*(-8) - 7 = - 16 - 7 = - 23
- 23 = - 23
L=P
8x+4=6x+10
8x - 6x = 10 - 4
2x = 6
x= 6 : 2
x= 3
spr.
8x+4=6x+10
L= 8x + 4= 8 * 3 + 4= 24 + 4= 28
P= 6x + 10 = 6*3 + 10 = 18 + 10 = 28
28 = 28
L=P
Szczegółowe wyjaśnienie:
