K) 69-x=x+96
69-96=x+x
-27=2x
2x=-27| : 2
x=-13,5
L)1/2c+5=c+8
-3=1 1/2c
1 1/2c=-3| : 1 1/2
c=- 2
K.
69-x=x+96-x-x=96-69
-2x=27 /podzielić(-2)x=13,5L.
1/2c+5=c+8
1/2c-c=8-5
-1 i 1/2c=3 /podzielić (-1 i 1/2)c=3*(-2/3)
c=-6/3
c=-2
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K) 69-x=x+96
69-96=x+x
-27=2x
2x=-27| : 2
x=-13,5
L)1/2c+5=c+8
-3=1 1/2c
1 1/2c=-3| : 1 1/2
c=- 2
K.
69-x=x+96
-x-x=96-69
-2x=27 /podzielić(-2)
x=13,5
L.
1/2c+5=c+8
1/2c-c=8-5
-1 i 1/2c=3 /podzielić (-1 i 1/2)
c=3*(-2/3)
c=-6/3
c=-2