Rozwiąż i sprawdź
a)3x+15=x+15
b)5x+4=x+15
c)6x+4=4x-2
d)5x+2=3x-4
Chodzi o to Ze prawa lewa L=P
3x-x=15-15
2x=0/2
x=0
spr,
3x+15=x+15
3*0+15=0+15
0+15=15
15=15
P=L
5X-X=15-4
4x=11/4
x=2.75
spr.
5x+4=x+15
5*2.75+4=2.75+15
13.75+4=17.75
17.75=17.75
6x-4x=-2-4
2x=-6/2
x=-3
6x+4=4x-2
6*-3+4=4*-3-2
-18+4=-12-2
-14=-14
5x-3x=-4-2
x= -3
5x+2=3x-4
5*-3+2=3*-3-4
-15+2=-9-4
-13=-13
LICZE NA NAJ
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a)3x+15=x+15
3x-x=15-15
2x=0/2
x=0
spr,
3x+15=x+15
3*0+15=0+15
0+15=15
15=15
P=L
b)5x+4=x+15
5X-X=15-4
4x=11/4
x=2.75
spr.
5x+4=x+15
5*2.75+4=2.75+15
13.75+4=17.75
17.75=17.75
P=L
c)6x+4=4x-2
6x-4x=-2-4
2x=-6/2
x=-3
spr.
6x+4=4x-2
6*-3+4=4*-3-2
-18+4=-12-2
-14=-14
P=L
d)5x+2=3x-4
5x-3x=-4-2
2x=-6/2
x= -3
spr.
5x+2=3x-4
5*-3+2=3*-3-4
-15+2=-9-4
-13=-13
P=L
LICZE NA NAJ