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x=10-5
x=5
x-4=5
x=5+4
x=9
2x+3=15
2x=15-3
2x=12 /:2
x=6
5x+13=23
5x=23-13
5x=10 /:5
x=2
3x+11=41
3x=41-11
3x=30 /:3
x=10
2x-5=5
2x=5+5
2x=10 /:2
x=5
3x-1=20
3x=20+1
3x=21 /:3
x=7
x= 10 - 5
x= 5
spr.
x + 5= 10
L = x+ 5= 5+5= 10
P=10
L=P
x-4=5
x= 5 + 4
x= 9
spr.
x- 4= 5
L = x- 4 = 9 - 4 = 5
P= 5
L=P
2x+3=15
2x= 15 - 3
2x= 12
x= 12 : 2
x= 6
spr.
2x + 3 = 15
L= 2x + 3 = 2*6 + 3= 12 + 3= 15
P= 15
L=P
5x+13=23
5x = 23 - 13
5x= 10
x= 10 : 5
x= 2
spr.
5x + 13 = 23
L = 5x + 13= 5*2 + 13= 10 + 13= 23
P= 23
L=P
3x+11=41
3x = 41 - 11
3x= 30
x= 30 : 3
x= 10
spr.
3x + 11= 41
L= 3x + 11= 3 * 10 + 11= 30 + 11= 41
P = 41
L=P
2x-5=5
2x = 5 + 5
2x= 10
x= 10 : 2
x= 5
spr.
2x- 5= 5
L= 2x - 5= 2*5 - 5= 10 - 5= 5
P = 5
L=P
3x-1=20
3x= 20 + 1
3x= 21
x= 21 : 3
x= 7
spr.
3x-1 = 20
L = 3x-1= 3*7 - 1= 21-1= 20
P= 20
L=P