1.Sprawdź, czy podana liczba spełnia równanie:
x-4=9-2x x=3
L=
P=
15+y= -y+5
L=
P=
2.Rozwiąż równania:
4e-8=-12
6x-1=x+3
3(k-1)=2k+6
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Zad.1
a) x=3
x-4 = 9-2x
3x=13
9=13
L≠P
b) y=-5
15+ y = -y+5
15 - 5 = 5 + 5
10 = 10
L=P
Zad.2
a) 4e-8=-12
4e=-12+8
4e=-4
e=1
b) 6x-1=x+3
6x-x=3+1
5x=4
x=4/5
c) 3(k-1)=2k+6
3k-3=2k+6
3k-2k=6+3
k=9